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1
Savitri, Erna Noor, Putut Marwoto, and Sunyoto Eko Nugroho. "The Effectiveness of a Combination of Lime (Citrus aurantifolia.), Lerak (Sapindus rarak) and Jasmine Flower (Jasminum nudiflorum) Extracts as and Environmentally Friendly Corrosion Inhibitor." Jurnal Penelitian Pendidikan IPA 10, no. 3 (March 30, 2024): 1019–24. http://dx.doi.org/10.29303/jppipa.v10i3.6364.
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Corrosion can also be defined as the forced destruction of metal by the surrounding medium which is usually a liquid (corrosive agent). Corrosion prevention processes can be carried out, including by coating the metal surface, cathodic protection, adding corrosion inhibitors and so on. Several types of inhibitors that have been widely used in industrial applications are synthetic chemical inhibitors. However, the compounds of inhibitors are environmentally unfriendly, toxic and expensive. To overcome this problem, it is necessary to develop an environmentally friendly alternative corrosion inhibitor or better known as a green inhibitor. This research aims to test the effectiveness of using a combination of lime (Citrus aurantifolia.), Lerak (Sapindus rarak) and jasmine flower (Jasminum nudiflorum) extracts as an environmentally friendly corrosion inhibitor. The results obtained were inhibitors in the form of a combination which were added to the corrosive medium HCl which could reduce the rate of aluminum corrosion. This research also shows that time and concentration influence the corrosion rate. A higher concentration (200 ppm) has a greater inhibitory power than a concentration of 100 ppm. The best inhibitory power is found in 200 ppm inhibitor with a soaking time of 20 minutes
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Flores-Garcia, N. S., C. D. Arrieta-Gonzalez, J. J. Ramos-Hernandez, G. K. Pedraza-Basulto, J. G. Gonzalez-Rodriguez, J. Porcayo-Calderon, and L. Martinez-Gomez. "Rare Earth-Based Compounds as Inhibitors of Hot-Corrosion Induced by Vanadium Salts." Materials 12, no. 22 (November 19, 2019): 3796. http://dx.doi.org/10.3390/ma12223796.
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In this study, the performance evaluation of lanthanum compounds as corrosion inhibitors of vanadium salts was performed. The inhibitors tested were lanthanum acetate and La2O3. The performance of the inhibitors was tested using sodium metavanadate (NaVO3) as a corrosive medium at 700, 800, and 900 °C. The corrosion inhibitory effect was evaluated on the corrosion process of 304H stainless steel. The corrosion rate of the steel was determined by the mass loss technique after 100 h of immersion in the corrosive salt with and without the addition of the corrosion inhibitor. The results show that lanthanum compounds act as corrosion inhibitors of vanadium salts. The inhibitory effect increases by increasing the concentration and tends to decrease when increasing the test temperature. Lanthanum compounds act as excellent corrosion inhibitors due to their ability to stabilize vanadium cations. Vanadium is stabilized by forming a new compound, lanthanum vanadate (LaVO4), with a melting point much higher than the compounds formed when Mg or Ni compounds are used as corrosion inhibitors.
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Pletnev, Mikhail. "Carbon nanocomposites in the corrosion inhibition." E3S Web of Conferences 225 (2021): 05002. http://dx.doi.org/10.1051/e3sconf/202122505002.
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Metal-carbon nanocomposites have been investigated as additives to enhance the protective effect of corrosion inhibitors. Two inhibitors were used as corrosion inhibitors. Inhibitor VNH-L-113 (1-morpholinomethylcyclohexylamine) belongs to Schiff bases, which are known as corrosion inhibitors in neutral and acidic media. Inhibitor SNPKh-1004 is often used in the practice of corrosion protection in the oil and gas industry. For research, an electrochemical method was applied using corrosion rate meters of the Monicor type. Neutral aqueous solution and water simulating the corrosive environment of oil fields were chosen as corrosive media. The result shows, that the copper-carbon nanocomposite enhances the protective effect of corrosion inhibitors of various chemical nature in various corrosive environments. The studies carried out make it possible to consider the use of metal-carbon nanocomposites as a promising direction for increasing the effectiveness of inhibitors in the oil and gas industry.
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Desai, Pradnya D., Chetan B. Pawar, Madhavi S. Avhad, and Aarti P. More. "Corrosion inhibitors for carbon steel: A review." Vietnam Journal of Chemistry 61, no. 1 (December 23, 2022): 15–42. http://dx.doi.org/10.1002/vjch.202200111.
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AbstractCorrosion inhibitors are one of the practical and cost‐effective way of preventing and inhibiting corrosion. An inhibitor's primary function includes creating a barrier by forming one or more molecular layers to protect against corrosive attacks. Organic molecules are one of the most popular, efficient, and practical corrosion inhibitors, and all studies demonstrate that organic compounds, preferentially those containing nitrogen (N), sulphur (S), and oxygen (O), have high inhibitory efficiency. Also, corrosion inhibitors include inorganic compounds. Since inorganic and organic inhibitors are both toxic and expensive; emphasis is being placed on developing green corrosion inhibitors as well as on modification of inhibitors. We are focusing on carbon steel (CS) substrate in this review as it is the first‐line material and is widely employed in various industrial applications. Whereas corrosion resistance of CSs in acidic environments is a constantly evolving topic, working on better performance of CSs as more cost‐effective alternatives to other alloys.
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Jasim, Haider Hadi, Read Abd Al-Hussain, and Ahmed Shawqi Sadeq. "Evaluation the Efficiency of Various Types of Corrosion Inhibitors Used for Basrah Water Storage Tanks." Al-Nahrain Journal for Engineering Sciences 23, no. 3 (November 21, 2020): 267–76. http://dx.doi.org/10.29194/njes.23030267.
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In this paper, the efficiency of six different types of corrosion inhibitors used in Basrah drinking water tanks was assessed using a potentiostatic test method. The mechanism of adsorption of silicate and phosphate inhibitors in AISI 316 stainless steel surfaces and the effects of different water components in inhibitors are discussed in detail. The values of corrosion rate obtained from the Potentiostatic test showed that the protection against corrosion in the presence of inhibitors is better compared to the case of absence of inhibitors. The results of the six types of corrosion inhibitors tested showed that the inhibitory efficacy is higher below the temperatures 45oC, but when raise the temperature above 45oC the inhibitory efficiency becomes to decrease. Also, the test results indicated that the corrosion inhibitor involves silicate products provided more inhibited efficiency compared to the phosphate inhibitor alone or used the combined silicate/phosphate corrosion inhibitor. The inspection of the surface of the tested samples using optical methods shows that the pitting corrosion is demonstrated on the specimen surfaces after testing with or without inhibitors.
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Reyes-Dorantes, E., J. Zuñiga-Díaz, A. Quinto-Hernandez, J. Porcayo-Calderon, J. G. Gonzalez-Rodriguez, and L. Martinez-Gomez. "Fatty Amides from Crude Rice Bran Oil as Green Corrosion Inhibitors." Journal of Chemistry 2017 (2017): 1–14. http://dx.doi.org/10.1155/2017/2871034.
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Due to its high oil content, this research proposes the use of an agroindustrial byproduct (rice bran) as a sustainable option for the synthesis of corrosion inhibitors. From the crude rice bran oil, the synthesis of fatty amide-type corrosion inhibitors was carried out. The corrosion inhibitory capacity of the fatty amides was evaluated on an API X-70 steel using electrochemical techniques such as real-time corrosion monitoring and potentiodynamic polarization curves. As a corrosive medium, a CO2-saturated solution (3.5% NaCl) was used at three temperatures (30, 50, and 70°C) and different concentrations of inhibitor (0, 5, 10, 25, 50, and 100 ppm). The results demonstrate that the sustainable use of agroindustrial byproducts is a good alternative to the synthesis of environmentally friendly inhibitors with high corrosion inhibition efficiencies.
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Asmara, Yuli Panca, Firda Herlina, and Agus Geter Edy Sutjipto. "Selection of Inhibitor and Recent Advances in Enhancing Corrosion Prevention." Defect and Diffusion Forum 431 (February 6, 2024): 69–76. http://dx.doi.org/10.4028/p-ivxj7u.
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Corrosion inhibitors are substances that protect metal surfaces by forming a protective film to prevent metallic materials in contact with corrosive environments. Inhibitors are created with capability to adsorb onto the metal surface, creating a barrier film, or neutralizing the detrimental effects of corrosive substances. Their performance are evaluated based on the ability in reducing corrosion rate. Traditionally, corrosion inhibitors made of chemical synthetic compounds. But as synthetic inhibitors have environmental impact, researchers are starting to explore compound alternatives. Currently, inhibitor technologies have demonstrated a remarkable growth in performance marked by the discovery of new types of inhibitors. Ongoing research are focusing on self-healing inhibitor, eco-friendly inhibitor, and nanostructured compounds inhibitors. This paper will comprehensively address the current challenges of advanced corrosion inhibitors. From the investigation, it has been noticed that application of innovative technologies has led to a transformative impact in producing with significant enhancement in their overall performance capabilities.
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Bahtiti, Nawal H., and Ibrahim Abdel-Rahaman. "Anti-Corrosive Effect of Jordanian-Bay- Leaves Aqueous Extract on Mild Steel in 1.0 M Hydrochloric Acid Solution." WSEAS TRANSACTIONS ON ENVIRONMENT AND DEVELOPMENT 17 (June 11, 2021): 614–18. http://dx.doi.org/10.37394/232015.2021.17.59.
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Natural inhibitors are the most crucial manner to lessen the corrosion price of various business metals. There are several strategies being used with corrosion inhibitors. One technique being used is the Electrochemical strategies. The gain with this technique is their brief size time and mechanistic information. It is beneficial in the corrosion's layout safety techniques besides the layout of the brand new inhibitors, there are 3 styles of corrosion inhibitors as anodic inhibitors, cathodic inhibitors, over one inhibitor. The corrosion inhibition of slight metallic in 1.0 M HCl solution with the aid of using Jordanian -Bay- leaves extract has been studied with the use of potentiodynamic polarization technique. Results received a display that Bay- leaves aqueous extract behaves as an anodic inhibitor for slight metallic in 1.0 M HCl solution. The inhibitor capabilities thru adsorption following Temkin adsorption isotherm. The impact of parameters like temperature and inhibitor awareness at the corrosion of slight metallic has additionally been studied.
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Scepanovic, Jelena, Bojana Zindovic, Dragan Radonjic, Marijana Pantovic-Pavlovic, and Miroslav Pavlovic. "Influence of organic/inorganic inhibitors on AISI 304 (1.4301) and AISI 314 (1.4841) steels corrosion kinetics in nitric acid solution." Journal of the Serbian Chemical Society, no. 00 (2024): 76. http://dx.doi.org/10.2298/jsc240514076s.
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This study evaluates the effectiveness of KMnO4, MK3, and 1-butanol inhibitors on corrosion of AISI 314 and AISI 304 stainless steels using linear and potentiodynamic polarization in 0.1 M HNO3. Metrics like corrosion potential (Ecorr), current density (jcorr) and polarization resistance (Rp) assessed inhibitor efficacy. The inhibitors improved electrochemical parameters significantly, indicating strong anti-corrosive properties. 1-Butanol had the most profound effect, enhancing corrosion potential and drastically reducing corrosion current density, demonstrating superior protection. Results indicated that without inhibitors, both steels showed higher corrosion rates and more negative potentials, reflecting their susceptibility to corrosion. The introduction of inhibitors markedly improved these parameters, particularly with 1-butanol, which significantly enhanced polarization resistance and shifted corrosion potential towards less negative values. Potentiodynamic results highlighted the dynamic effectiveness of inhibitors, reinforcing their role in mitigating corrosion under varied conditions. The study underscores the importance of selecting appropriate inhibitors to enhance the durability and longevity of stainless steels in acidic environments, with 1-butanol showing potential for industrial applications requiring high corrosion resistance. This necessitates comprehensive testing to accurately measure inhibitor capabilities in different conditions.
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Ade, Suraj B. "Corrosion Inhibition of Mild Steel in Different Acid Medium by Using Various Acidic Groups of Organic Compounds." International Journal for Research in Applied Science and Engineering Technology 10, no. 2 (February 28, 2022): 367–73. http://dx.doi.org/10.22214/ijraset.2022.40288.
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Abstract: Benzoic acid, salicylic acid, Anthranilic acid, 2- Nitro benzoic acid, 2- Chlorobenzoic acid compounds containing acidic group as a corrosion inhibitor for carbon steel was investigated. The study revealed that the various group such as (- COOH, OH, Cl and –NO2) containing in organic compounds has an inhibitory action on the corrosion of carbon steel in the investigated medium. Corrosion rate of mild steel was studied using chemical weight loss method at room temperature. This research paper presents use of carboxylic group organic compounds as corrosion inhibitors for metals in 0.1N, 0.01N and 0.001N (HCl, HNO3 and H2SO4) acidic medium. A common mechanism for inhibiting corrosion involves formation of a coating, often a passivation layer, which prevents access of the corrosive substance to the metal. Organic corrosion inhibitors adsorb on the surface to form protective film, which displace water and protect it against deteriorating. Effective organic corrosion inhibitors contain nitrogen, oxygen, sulphur and phosphorus with lone electron pairs as well can contain structural moieties with π-electrons that interact with metal favouring the adsorption process. This review presents mechanisms and monitoring of corrosion, laboratory methods for corrosion study, relationship between structure and efficacy of corrosion inhibitions, theoretical approach to design new inhibitors and some aspects of corrosion. Keywords: Corrosion, Inhibition, carbon steel, Weight loss and acidic group (-COOH, OH, -Cl and –NO2) group containing organic compounds.
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Wang, Xue, Changfeng Fan, Lanyi Sun, Hongyan Shang, Duxin Zhang, Nan Xu, Bin Wang, and Jianbin Xu. "Performance of a Composite Inhibitor on Mild Steel in NaCl Solution: Imidazoline, Sodium Molybdate, and Sodium Dodecylbenzenesulfonate." Coatings 14, no. 6 (May 21, 2024): 652. http://dx.doi.org/10.3390/coatings14060652.
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Mild steel corrosion is a significant challenge in oil and gas exploitation. Inhibitors are frequently employed to minimize the corrosive impact on mild steel. Mixing corrosion inhibitors is an effective method in reducing the dosage of toxic compounds and expanding the potential applications of inhibitors in NaCl solutions. Herein, a mixed corrosion inhibitor composed of imidazoline (IM), sodium molybdate, and sodium dodecylbenzenesulfonate (SDBS) for mild steel in a 3.5 wt% NaCl solution are investigated by orthogonal experimental design and electrochemical measurement. The imidazoline compound was synthesized and identified using Fourier transform infrared (FTIR) spectroscopy. The inhibitory effect is improved by higher concentrations of sodium molybdate and is further enhanced with the addition of 10 mg/L of SDBS. The electrochemical impedance spectroscopy indicates that the combination of IM (100 mg/L), sodium molybdate (50 mg/L), and SDBS (100 mg/L) results in excellent performance with electrochemical impedance (1.8 kohm·cm2). The mild steel surfaces after electrochemical measurement were analyzed using scanning electron microscopy (SEM). The information can contribute to the development of corrosion inhibitors with high performance or to understand the influence of mixing inhibitors on corrosion processes of mild steels.
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Asmara, Yuli Panca, Tedi Kurniawan, Agus Geter Edy Sutjipto, and Jamiluddin Jafar. "Application of Plants Extracts as Green Corrosion Inhibitors for Steel in Concrete - A review." Indonesian Journal of Science and Technology 3, no. 2 (August 30, 2018): 158. http://dx.doi.org/10.17509/ijost.v3i2.12760.
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High requirements in protection of steel reinforcing bar (steel rebar) from corrosion are necessary since there are multi interaction of corrosive chemicals which cause early damage of concrete buildings. Corrosion of steel in concrete can destroy the concretes and reduce concrete strength. To protect rebar from corrosion, application of corrosion inhibitor is believed to have higher performance compared to other protection systems. To date, organic inhibitors have promising methods in steel rebar protection as they are environment-friendly, compatible with concrete, cost effective and applicable in any various concrete conditions. Thus, demands in using these inhibitors tend to increase significantly. This paper reviews the applications of green corrosion inhibitor specifically highlighted in protecting mechanisms, typical plants extracted, performance in corrosion protection, and classification of green corrosion inhibitors. The corrosion resistances of carbon steels in concrete protected by green inhibitors are in focus. As summary, it can be confidently notified that green corrosion inhibitors for steel in concrete will have a prospect to be used as corrosion prevention in the future with further improvements.
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Septiyani Arifin, Devi Eka, Destri Muliastri, Rudi Rudiana, and Fitri Nur Indah Sari. "Green Corrosion Inhibitors to Head Off the Corrosion Rate of ST 37 Steels." Current Journal: International Journal Applied Technology Research 2, no. 1 (May 21, 2021): 21–28. http://dx.doi.org/10.35313/ijatr.v2i1.40.
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The corrosions process is a natural process and cannot be hindered, but it can be protected by adding a green inhibitor. Green corrosion inhibitors are a new alternative solution for corrosion protection because they are low-cost, biodegradable, and eco-friendly inhibitors. This research was used papaya leaves dan guava leaves extract as organic inhibitor solution by Maceration Method. The concentration of these green inhibitors is 0 mL, 1 mL, 2.5 mL, 3 mL, and 3.5 mL. The type of testing method used in this research is FTIR, PDP, and weight loss. The results show that there is Tanin function groups in papaya leaves and guava leaves extract. The potentiodynamic polarization shows the value of corrosion rate without inhibitor is 0,418 mm/year. In contrast, the corrosion rate was decreased with improving the green inhibitor as many 3.5 mL. The corrosion rate was decreased until 0,00055 mm/year, and the value of efficiency is 99,868%.
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Liu, Jing, Bingqin Wang, Tianqi Chen, Lianjun Hao, Jun Wu, and Chao Liu. "The Effect of Corrosion Inhibitors on the Corrosion Behavior of Ductile Cast Iron." Metals 15, no. 1 (January 15, 2025): 70. https://doi.org/10.3390/met15010070.
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Based on actual service environment parameters, this experiment investigated the change in the corrosion rate of nodular cast iron (DCI) in an environment containing organic (triethanolamine phosphate, PTEA) and inorganic (hexametaphosphate, SHMP) inhibitors, and analyzed the effects of both inhibitors and the pH value of the solution on the corrosion behavior of DCI. Additionally, a variable flow rate device was used to conduct immersion tests, enabling the accurate evaluation of the materials’ corrosion resistance in an actual service environment. After a certain period, the corrosion of the DCI surface was observed, and the weight loss corrosion rate of the materials was calculated to analyze the differences in corrosion resistance under varying environmental parameters. It was found that the inhibitory effect of both inhibitors on DCI increased with the immersion time, and the inhibitory effect of the SHMP inhibitor was more pronounced under alkaline conditions. Based on the electrochemical and flow rate immersion test results, it can be concluded that, in the solution environment used in this experiment, the inhibitory effect of the SHMP inhibitor on DCI is stronger than that of the PTEA inhibitor.
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Алмагамбетова, Сауле, and Saule Almagambetova. "Analysis of the ways of anticorrosive influence on food industry equipment protection." Food Processing: Techniques and Technology 48, no. 2 (January 10, 2019): 129–35. http://dx.doi.org/10.21603/2074-9414-2018-2-129-135.
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Nowadays there is a significant engineering and technical issue which is corrosion of structural materials, metal equipment and installations. Inhibitors are one of the effective, universal and economical means of protection against corrosion. The author justifies the relevance of the problem connected with selection of corrosion inhibitors for food industry companies. The aim of the work is to study the effect of inhibitors based on plant raw materials on increasing the corrosion resistance of food industry equipment in technological corrosive media. A literature review showed that the use of synergistic inhibitory compositions is more effective than using inhibiting additives separately. A specified inhibitor is a modified plant raw material. It has biocidal and bactericidal properties that provide for high efficiency of corrosion protection of structural steels in neutral and acid media and is used to improve protective and physico-mechanical properties of coatings. The author studied the effect of concentrate inhibitor in the working environment on the basis of technological regulations to justify recommendations on the use of this concentrate in protecting equipment against corrosion. As a result of the study, the author determined that the greatest effect took place when a modified concentrate inhibitor was used. The plant-based concentrate inhibitor does not have lower corrosion protection effectiveness than the industrial inhibitor PB-5. On the contrary, it has a number of definite advantages such as environmental safety, multiple action directions as well as a positive effect on the sanitary and hygienic conditions in the process of inhibitor preparation and use. The author gives recommendations on the possibility of using this inhibitor to protect the mechanisms used in food industry against corrosion.
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Sembiring, Aggryppyne Keyne Oberta, Anak Agung Bawa Putra, and Oka Ratnayani. "UTILIZATION OF CINNAMON BARK (CINNAMOMUM BURMANNI) EXTRACT AS A NATURAL INHIBITOR FOR THE CONTROL OF CORROSION RATE IN IRON METAL." Jurnal Ilmu Pendidikan Indonesia 11, no. 3 (November 8, 2023): 140–50. http://dx.doi.org/10.31957/jipi.v11i3.2341.
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Iron is a metal that is very susceptible to corrosion. Corrosion of iron can occur due to reaction with the surrounding environment, causing damage to ferrous metal. The use of organic inhibitors such as cinnamon bark is considered to be able to suppress the corrosion rate, because in the inhibitor there are tannin compounds that are able to form complex compounds with Fe(III) on the metal surface. Bark consists of an tannins, makes this cinnamon bark capable of being an organic inhibitor. The purpose of this riset was to determine the effect of inhibitor concentration and variation of corrosive media on the corrosion rate, and to determine whether cinnamon bark extract had the potential to be used as an inhibitor. The method used is weight loss in which iron is immersed in various corrosive media for 48 hours without the addition of inhibitors and with the addition of inhibitors of 10; 20; 30; 40; 50; 60; 70; 80; 90; and 100 ppm. The highest corrosion rate without the addition of inhibitors occurred in iron immersed in salt media (NaCl 3.5%) of 53.5371 mpy, and the lowest corrosion rate occurred in iron immersed in neutral media (aquadest) of 15.6342 mpy. The corrosion rate also decreases with the increase in the concentration of the added inhibitor. In other words, this cinnamon bark extract has the potential to be used as an organic inhibitor.
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Roscher, Jessica, Dan Liu, Xuan Xie, and Rudolf Holze. "Aromatic Metal Corrosion Inhibitors." Corrosion and Materials Degradation 5, no. 4 (October 31, 2024): 513–60. http://dx.doi.org/10.3390/cmd5040024.
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Molecular inhibitors added to the corrosive medium attacking metallic materials are a well-established way of combating corrosion. The inhibitive action proceeds via adsorption of the inhibitor on the surface to be protected. Aromatic building blocks in the inhibitor play a major role in its protective action, and further details like substituents, heteroatoms, and molecular geometry contribute. An overview focused on aromatic inhibitors is provided, aiming at the identification of particularly promising inhibitors and their mode of action. Directions for further research and development are pointed out in the conclusion.
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Paramitha, Tifa, Angely Luviana, Angelina Putri, Randi Reynaldi, Rafila Chika Azzahra, Tika Paramitha, and Rony Pasonang Sihombing. "Turmeric (Curcuma longa) Extract Characterization for Corrosion Inhibitor using Microwave-Assisted Extraction." JKPK (Jurnal Kimia dan Pendidikan Kimia) 9, no. 1 (April 4, 2024): 38. http://dx.doi.org/10.20961/jkpk.v9i1.79249.
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<p>Metallic corrosion, the deterioration process induced by the interaction between metals and corrosive environments, poses a significant challenge to material integrity and longevity. Corrosion inhibitors have been identified as an effective approach among various mitigation strategies. Natural extracts, such as those derived from turmeric/<em>Curcuma longa</em>, have garnered attention for their potential as eco-friendly corrosion inhibitors. This study endeavors to extract, characterize, and evaluate turmeric extract's efficacy as a corrosion inhibitor within a 30% acetic acid solution. Employing microwave-assisted extraction with a 96% ethanol solvent facilitated the isolation of the extract, which was subsequently subjected to qualitative analysis through phytochemical screenings and Gas Chromatography-Mass Spectrometry (GC-MS). These analyses confirmed the presence of antioxidative phytochemicals, including alkaloids, terpenoids, turmeronoids, curcumin, sesquiterpenoids, and phenols. The corrosion inhibitory properties of turmeric extract were assessed via immersion and flow loop experiments, revealing a notable reduction in corrosion rates—from 0.1540 mm/year to 0.0801 mm/year in immersion tests and from 5.3747 mm/year to 2.9369 mm/year in flow loop tests. Such outcomes underscore turmeric extract's potential as a viable corrosion inhibitor, attributed primarily to the chemical interactions facilitated by curcumin's phenolic and carbonyl groups with the metal surface, thereby enhancing protective efficacy. The inhibitor efficiency was quantified at 47.9743% and 45.3565% for immersion and flow loop tests, highlighting the extract's substantial inhibitory performance.</p>
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Mohyaldinn, Mysara Eissa, Wai Lin, Ola Gawi, Mokhtar Che Ismail, Quosay A. Ahmed, Mohammed A. Ayoub, and Anas Hasan. "Experimental Investigation of a New Derived Oleochemical Corrosion Inhibitor." Key Engineering Materials 796 (March 2019): 112–20. http://dx.doi.org/10.4028/www.scientific.net/kem.796.112.
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Most of the corrosion inhibitors that are used in industry contain chemicals that are harmful to health and environment. Corrosion inhibitors derived from green sources are, therefore, believed to be a good option for replacing the chemical corrosion inhibitors. In this work, a green oleochemical corrosion inhibitor derived from Jatropha Curcas is introduced. The paper discusses the methodology of deriving the corrosion inhibitor as well as the experimental test conducted for evaluating its corrosion inhibition efficiency. The new oleochemical corrosion inhibitor was derived via two reactions. Jatropha oil was firstly saponified with sodium hydroxide to yield gras acid and glycerol, which was then esterified with boron fluoride in presence of excess methanol to produce the oil methyl esters, which is used as oleo-chemical corrosion inhibitor. To evaluate the oleo-chemical corrosion inhibitor, the corrosion rate of mild steel in NaCl corrosive medium with CO2 is tested at static condition and two dynamic conditions, namely 500 and 1500 rpm. This is to simulate the transitional and turbulent flow in a pipeline. At each dynamic condition, the proposed corrosion inhibitor was tested at concentration dosages of 0, 50, 100, and 150 ppm. The experiments results revealed a good performance of the new oleochemical corrosion inhibitor. The inhibition efficiency was found to be highly affected by the concentration of corrosion inhibitor. Total corrosion inhibition of the mild steel was noticed by using 150 ppm at dynamic condition of 500 rpm.
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Budiarsa, I. Nyoman, I. Ketut Suarsana, I. Made Astika, and I. Made Gatot Karohika. "Effectiveness of Red Dragon Fruit Peel Extract as an Eco-Friendly Corrosion Inhibitor for API 5L Steel." E3S Web of Conferences 517 (2024): 05015. http://dx.doi.org/10.1051/e3sconf/202451705015.
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The development of organic or natural inhibitors is essential due to their cost-effectiveness and eco-friendliness. In this study, an organic inhibitor derived from red dragon fruit peel waste is employed. The material of interest is heat-treated API 5L Grade B steel. The research assesses the inhibitor’s efficiency in corrosive environments, namely 3.5‰ NaCl solution and pH 3 HCl solution, with varying inhibitor concentrations (5 ppm, 10 ppm, 15 ppm, 20 ppm). Using Tafel analysis and Electrochemical Impedance Spectroscopy (EIS), it is found that the addition of red dragon fruit peel extract substantially reduces the corrosion rate. The highest efficiency is observed in the 3.5‰ NaCl solution (62.4%) and pH 3 HCl solution (87.73%), accompanied by charge transfer resistances of 2.47 x 106 Ω and 1.79 x 103 Ω, respectively. Immersion tests reveal corrosion products, subsequently examined using X-ray Diffraction (XRD) to identify lepidocrocite phases in the 3.5‰ NaCl solution and magnetite phases in the pH 3 HCl solution. This research supports the development of environmentally friendly and effective natural corrosion inhibitors for protecting steel materials in corrosive conditions.
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Cheng, Yuan Peng, Zi Li Li, Hai Sheng Bi, and Yi Xuan Song. "Research on the CO2 Corrosion Inhibitor Technology in Oil and Gas Fields." Advanced Materials Research 734-737 (August 2013): 1240–45. http://dx.doi.org/10.4028/www.scientific.net/amr.734-737.1240.
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CO2 corrosion is the main safety problem of production process in gathering, delivering and treating of oil and gas. Injecting inhibitors to suppress CO2 corrosion in oil and gas fields is an easy-to-use, low investment, quick solution method. The goal of this study is to summarize the already established research results of controlling CO2 corrosion, inhibition mechanism of CO2 corrosion inhibitors is reviewed, application status of inhibitor technology in CO2 corrosive environment is discussed. Research status of amides, imidazoline derivatives, quatemary ammonium salts and schiff bases overseas and domestic is highlighted. Finally, an outlook on the development trend of CO2 corrosion inhibitors is presented.
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Nasser, Rabab M., and Nora M. Masmali. "The effectiveness of Tamarindus Indica extracts as a metal corrosion inhibitor in various circumstances." Anti-Corrosion Methods and Materials 69, no. 3 (March 3, 2022): 224–33. http://dx.doi.org/10.1108/acmm-06-2021-2490.
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Purpose Plant development and use as green corrosion inhibitors are already recognized as one of the most environmentally friendly and effective protocols. In recent years, efforts have been made to find green corrosion inhibitors as an alternative to synthetic inhibitors for metals in acid medium. This paper aims to report the investigation of use of aqueous extracts of Tamarindus Indica as green inhibitors for corrosion of metals within different circumstances. Design/methodology/approach The use of Tamarindus Indica extracts (leaves, stem, fruit pulp and fruit husk) as corrosion inhibitors for mild steel and aluminum in different mediums (HCl, H2SO4, formic acid and citric acid) at different temperatures was investigated. Findings The inhibitory efficiency of Tamarindus Indica extracts increases with increasing concentration and decreases with increasing temperature. Langmuir is the adsorption isotherm, and the extract (inhibitor) is a mixed-type inhibitor (physisorption and chemisorption). Practical implications Tamarindus extracts (leaves, stem, fruit pulp and fruit husk) are effective inhibitors and can be used to protect metals from corrosion at different circumstances. Originality/value To the best of the authors’ knowledge, this is the first review that discusses the use of Tamarindus Indica extracts as corrosion inhibitors for metals.
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Sabiha, Malika, Younes Kerroum, Maha El Hawary, Maria Boudalia, Abdelkbir Bellaouchou, Othmane Hammani, and Hatem M. A. Amin. "Investigating the Adsorption and Corrosion Protection Efficacy and Mechanism of Marjoram Extract on Mild Steel in HCl Medium." Molecules 30, no. 2 (January 11, 2025): 272. https://doi.org/10.3390/molecules30020272.
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In recent years, the anti-corrosive properties of natural extracts as environmentally friendly inhibitors have gained considerable interest. This study evaluates the potential of Marjoram (Origanum majorana L.) essential oil (OML), collected from Salé, Morocco, as a corrosion inhibitor for mild steel in 1 M HCl medium. The protection performance of OML was assessed using various electrochemical techniques, including potentiodynamic polarization (PDP) and electrochemical impedance spectroscopy (EIS), as well as the weight loss method. The influence of OML concentration and temperature on the inhibition performance were investigated. OML demonstrated pronounced inhibitory benefits via increasing the corrosion resistance of mild steel in the corrosive HCl solution, thus reducing the corrosion rate to 0.11 mg cm−2 h−1 and increasing the inhibition efficiency to 87.1% at an inhibitor concentration of 500 ppm. PDP confirmed that the inhibitor works as a mixed-type inhibitor with cathodic supremacy. EIS revealed that the charge transfer mechanism is the main controlling factor for the corrosion process. The thermodynamic parameters suggested a key role of OML physisorption in inhibition, following the Langmuir isotherm. Importantly, SEM and EDX analyses suggested the formation of a protective layer of the extract onto the steel surface, which shields the surface from corrosive species. This is owed to the functional group-rich phytochemicals of OML. Therefore, the development of bio-based corrosion inhibitors is not only a step towards more eco-friendly industrial practices, but also meets the growing demand for sustainable materials in a world with constrained resources.
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Baskar, Prabu, Shalini Annadurai, Sushmithaa Panneerselvam, Mayakrishnan Prabakaran, and Jongpil Kim. "An Outline of Employing Metals and Alloys in Corrosive Settings with Ecologically Acceptable Corrosion Inhibitors." Surfaces 6, no. 4 (October 11, 2023): 380–409. http://dx.doi.org/10.3390/surfaces6040027.
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Researchers have just discovered an alternative to synthetic corrosion inhibitors, which are hazardous and terrible for the ecosystem, to prevent rusting in the environment. A metal corrodes when it is subjected to corrosive media (acid, base, or saline) and they deteriorate, leading to failure. The most straightforward and affordable corrosion protection and prevention technique in acidic environments has been proven to be corrosion inhibitors. On industrial surfaces, pieces of machinery, or vessels, these inhibitors slow the rate of corrosion, preventing the monetary losses brought on by metallic corrosion. Recently, attention has been directed to developing ecologically appropriate corrosion retardation methods because inorganic and organic inhibitors are harmful and expensive. Recent studies have focused on green mild steel (MS) corrosion inhibitors that mimic industrial processes in acidic conditions. This presentation briefly covers the many types of corrosion, the corrosion process and the most recent studies on using natural plant extracts as corrosion inhibitors. Since they are safe and cost-effective, green corrosion inhibitors are a new trend in preventing corrosion. These inhibitors are produced from various plant parts, and inhibition efficiency (IE) also depends on them. To ascertain the IE of the corrosion inhibitor, some experiments, including computational studies (quantum calculations and MD simulations), electrochemical measurements (electrochemical impedance (EIS) and potentio-dynamic polarization), surface morphology atomic force microscopy (AFM), scanning electron microscopy (SEM)/energy-dispersive X-ray analysis (EDX) and UV–visible spectroscopy are carried out. It has been demonstrated that the IE is maximum for green corrosion inhibitors compared to synthetic inhibitors. This paper provides an overview of the properties, mechanism of corrosion inhibitors, nature of green corrosion inhibitors and their IE obtained by performing tests. This review article discussion shows that reinforcement with plant extract performs well in aggressive environments, which is evident from electrochemical studies and surface analysis when compared to reinforcement with inhibitors.
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Bavarian, Behzad, Jia Zhang, and Lisa Reiner. "Corrosion Inhibition of Stress Corrosion Cracking and Localized Corrosion of Turbo-Expander and Steam/Gas Turbines Materials." Key Engineering Materials 488-489 (September 2011): 61–64. http://dx.doi.org/10.4028/www.scientific.net/kem.488-489.61.
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Stress corrosion cracking of 7050 aluminum alloys and ASTM A470 steel in the turbo expander and steam/gas turbine industry can cause expensive catastrophic failures, especially for turbo machinery systems performing in hostile, corrosive environments. Commercially available inhibitors were investigated for their effectiveness in reducing and controlling the corrosion susceptibility. Inhibitor effectiveness was confirmed with electrochemical corrosion techniques in different solutions. Polarization resistance increased with concentration of corrosion inhibitor due to film formation and displacement of water molecules. Cyclic polarization behavior for samples in the 1.0% and 5.0% inhibitors showed a shift in the passive film breakdown potential. The substantial increase in the passive range has positive consequences for neutralizing pitting and crevice corrosion cell chemistry. The strain to failure and tensile strength obtained from the slow strain rate studies for both alloys showed pronounced improvement due to corrosion inhibitor ability to mitigate SCC; the fractographic analysis showed a changed morphology with ductile overload as the primary failure mode instead of transgranular or intergranular cracking.
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Ivanova, A. G., L. N. Krasilnikova, O. S. Lezova, O. A. Zagrebelny, R. S. Khodzhaev, T. V. Khamova, V. I. Trusov, and O. A. Shilova. "Electrochemical properties of anticorrosive coatings based on organosilicate composition in combination with corrosion inhibitors." Perspektivnye Materialy 7 (2022): 66–74. http://dx.doi.org/10.30791/1028-978x-2022-7-66-74.
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The article considers the effect of atmospheric corrosion inhibitors “NOTEH”, “N-M-1”, “FMT” and phosphating primer VL-02 on the electrochemical properties of anticorrosive coatings based on a new modification of the organosilicate composition — brand OS-51-03M. For corrosion tests using the method of potentiodynamic polarization, carbon steel plates of the St3sp5 brand were used, on which coatings were applied by the paint and varnish method. It was revealed that the aqueous phosphating composition “NOTEH” and the corrosion inhibitor “N-M-1” significantly increase the corrosion resistance of organosilicate coatings in an aggressive environment — 3 % NaCl solution. For these coatings, it is impossible to register the current and corrosion potential after 1 month of exposure of coatings in a corrosive environment. Under similar measurement conditions, the electrochemical parameters of steel plates with unmodified organosilicate coating were recorded — the corrosion current density and corrosion potential were equal to 8·10-9A/m2 and –144 mV, respectively. It was revealed that the phosphating primer VL-02 has a negligible effect on increasing the duration of anticorrosive protection of the organosilicate coating system. The type of inhibitory protection of atmospheric corrosion inhibitors has been determined.
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Pramana, A. A., and Y. R. Fadillah. "Analysis of Corrosion in Production Tubing Using Monoethylene Glycol and Red Ginger as Inhibitors." IOP Conference Series: Earth and Environmental Science 1187, no. 1 (May 1, 2023): 012039. http://dx.doi.org/10.1088/1755-1315/1187/1/012039.
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Abstract The production system for industrial oil and gas is susceptible to corrosion, which must be controlled in order to sustain production and well direct as the production of tubing is the initial point of contact with the corrosion fluid and material agent. A chemical reaction between corrosive materials and fluids results in corrosion. Due to its mechanical characteristics, stainless steel has a wide range of uses in the building, chemical, and structural sectors. To combat corrosion issues, several chemical inhibitors are used, and numerous studies are actively working to develop organic inhibitors. Rhizome ginger is an organic component that has a high phenol antioxidant content and antioxidant compound, making it useful for corrosion issues. In this study, the effect of monoethylene glycol and ginger extract inhibitors on corrosion was reviewed. The corrosion rate was computed using an olga simulator, and the influence of the inhibitor on the rate of corrosion and the effectiveness of the inhibitors was examined.
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Mao, Jincheng, Difei Han, Jinzhou Zhao, Xiaojiang Yang, Chong Lin, and Heng Zhang. "Experimental and Theoretical Study on Cyanuric Chloride Derivatives as Corrosion Inhibitors for Oxyen Corrosion of Mild Steel in High Salinity Corrosive Medium." Revista de Chimie 72, no. 2 (May 7, 2021): 119–36. http://dx.doi.org/10.37358/rc.21.2.8425.
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Designed and synthesized two corrosion inhibitors that can resist corrosion of low-carbon steel in high-salinity corrosive media. When these compounds are used as corrosion inhibitors in high salinity corrosive media, the laboratory evaluation results clearly showed that the two corrosion inhibitors had an excellent corrosion resistance. The synthetic corrosion inhibitors have an symmetrical structure which not only has a symmetrical appearance but also has the practical significance of forming an entire surface covering layer, which avoids the general corrosion and pitting corrosion.
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Bessarab, O. V., and T. F. Platonova. "Usage of food additives for improvement the quality and safety of fruit canned food in metallic packaging." Proceedings of the Voronezh State University of Engineering Technologies 80, no. 3 (December 17, 2018): 170–75. http://dx.doi.org/10.20914/2310-1202-2018-3-170-175.
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Because of the metal packaging corrosion, during storage of canned food the quality deteriorates.One of the ways to reduction of quality loss and increase the shelf life of canned products is the use of food additives - corrosion inhibitors. From the literary data it is known that pectin and gelatin are corrosion inhibitors whose action is based on adsorption to the metal surface.Besides the usual gelatin, in the work we used hydrolyzed gelatin, which does not increase in the viscosity of the liquid phase.The aim of the present work was to study the effect of pectin, gelatin and hydrolysed gelatin on the tinplate corrosion rate in the liquid phase of stone fruit compotes (cherries, merries, peaches and plums). The corrosion rate was measured by the method of linear polarization resistance, based on the creating a potential difference between two identical samples of metal and measuring the amperage.The measurements were carried out using the universal automatic corrosion-meter "Expert-004".For all corrosive media, the corrosion rate kinetics is as follows: at the beginning of the test, the maximum corrosion rate of tinplate is observed, which decreases to a stationary value within 24-36 hours. The presence of inhibitors has not effect the kinetics of the process, but the steady-state corrosion rate for the liquid phase of compote from cherries decreased 1.6 - 3 times, for the liquid phase of compote from peaches - by 1.9 times.For the liquid phase of compotes from merries and plums, the application of pectin and hydrolysed gelatin does not has an inhibitory effect.The greatest inhibitory effect for the liquid phase of compotes from cherries is observed when applying 0.5% hydrolyzed gelatin - without an inhibitor, the steady-state corrosion rate of tinplate was 8.3 ?m / year, with the inhibitor - 2.8 ?m / year. According to the results of the study, it was found that in order to reduce quality losses during the storage of stone fruit compotes in a metal package, it is advisable to apply hydrolyzed gelatin in an amount of 0.5% to the mass of the liquid phase.
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Niyazbekova, A. B., T. A. Shakirov, and G. N. Urinbaeva. "INVESTIGATION OF VARIOUS PHOSPHATE CORROSION INHIBITORS IN CARBON DIOXIDE." Chemical Journal of Kazakhstan 74, no. 2 (June 30, 2021): 103–10. http://dx.doi.org/10.51580/2021-1/2710-1185.32.
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Corrosion leads to huge losses every year, and solving this problem is an important task.One of the effective methods of corrosion protection of equipment and pipelines in the oil industry is the use of corrosion inhibitors.Inhibitory protection is the most technological and effective way to control corrosion of oilfield equipment.The article deals with phosphate corrosion inhibitors of complex action in a carbon dioxide environment.The method of corrosion testing is generally accepted. Quantitative indi-cators of corrosion processes were calculated using formulas, and the measurement uncertainty was estimated using an algorithm using the Student's coefficient with a confidence probability of 0.95. In the course of the work, potentiometric determination of the pH of corrosive media using a combined glass electrode and an ionomerand photocolorimetric determination of the content of iron (III) with potassium rhodanide, as well as methods of infrared spectroscopy and electron microscopy were carried out.
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Hassan, Refat, Ishaq Zaafarany, Adil Gobouri, and Hideo Takagi. "A Revisit to the Corrosion Inhibition of Aluminum in Aqueous Alkaline Solutions by Water-Soluble Alginates and Pectates as Anionic Polyelectrolyte Inhibitors." International Journal of Corrosion 2013 (2013): 1–8. http://dx.doi.org/10.1155/2013/508596.
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The corrosion behavior of aluminum (Al) in alkaline media in presence of some natural polymer inhibitors has been reinvestigated. The inhibition action of the tested inhibitors was found to obey both Langmuir and Freundlich isotherms models. The inhibition efficiency was found to increase with increasing the inhibitors concentration and decrease with increasing the temperature, suggesting physical adsorption mechanism. Factors such as the concentration and geometrical structure of the inhibitor, concentration of the corrosive medium, and temperature affecting the corrosion rates were examined. The kinetic parameters were evaluated, and a suitable corrosion mechanism consistent with the kinetic results obtained is suggested and discussed.
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Damayanti, Rizky, Pulung Karo Karo, and Agus Riyanto. "Pemanfaatan Biomassa Sebagai Inhibitor Organik Pada Baja Aisi 1020 Di Universitas Lampung." Jurnal Teori dan Aplikasi Fisika 7, no. 2 (July 31, 2019): 197–206. http://dx.doi.org/10.23960/jtaf.v7i2.2055.
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Research has been conducted on. The utilization of biomassa as an organic inhibitor in AISI 1020 steel at Lampung University. Samples of carbon steel AISI 1020 were immersed in 3% corrosive medium HCl without being given and given inhibitors of leaf extract jengkol, salam, ketapang and mango 0.8% for 4 and 7 days. inhibitors of leaf extract jengkol, salam, ketapang and mango 0.8% for 4 and 7 days. Calculation of reduction in corrosion rate is carried out by the method of weight loss. The results showed that the addition of Biomasaa inhibitors was effective in reducing the corrosion rate of the samples with the greatest efficiency in the soaking of 7 days of ketapang leaves, which was equal to 74.22%. The results of XRD characterization showed that the phases formed were Fe and Fe2O3 in samples coated with inhibitors and in samples soaked without phase inhibitors Fe2O3 which were corrosion products. The results of SEM characterization showed that the microstructure of the surface of the sample after immersion in the inhibitor contained thin layers overlaying the steel in the sample not coated with the inhibitor, clearly visible cracks and holes indicating that the sample had undergone corrosion.
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Jin, Long, Rong Su, and Feng Gao. "Research on Evaluation of Corrosion Inhibitors for Oxygen Reducing Air Drive Gas Wells." International Journal of Energy 3, no. 2 (September 1, 2023): 50–54. http://dx.doi.org/10.54097/ije.v3i2.012.
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Severe CO2 corrosion and O2 corrosion occurred during the extraction of a certain gas well. Six commonly used corrosion inhibitors for a certain gas well were evaluated through indoor weight loss tests. It was found that the corrosion inhibition effect of No. 1 corrosion inhibitor in CO2 and O2 environments was the best compared to the other five corrosion inhibitors. The corrosion inhibition efficiency can be divided into 96% and 93%, and the dosage is small, which meets the requirements of the target gas well corrosion inhibitor. The corrosion inhibition mechanisms of the six corrosion inhibitors all conform to the adsorption mechanism, and their action mechanisms are all "negative catalytic" effects. Through adsorption, the activation energy of the cathodic and anodic reactions is increased, which hinders the occurrence of corrosion reactions. Among them, corrosion inhibitors 1, 2, 3, and 5 are mixed corrosion inhibitors that mainly inhibit anodic reactions, while corrosion inhibitors 4 and 6 are mixed corrosion inhibitors that mainly inhibit cathodic reactions.
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Zultiniar, Muhammad Kurnia Sandy, Ervan Wibowo, Desi Heltina, and Komalasari. "Coconut Fiber Extraction using Soda Pulping Method as Green Corrosion Inhibitor for ASTM A36 Steel." Journal of Physics: Conference Series 2049, no. 1 (October 1, 2021): 012094. http://dx.doi.org/10.1088/1742-6596/2049/1/012094.
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Abstract Currently, the corrosion inhibitor is a method that is widely used to control the corrosion rate of inner pipe in the chemical industry. This study aims to utilize coconut fiber as a green inhibitor, determine the effect of adding inhibitor concentration, immersing time, and determine the inhibition efficiency of coconut husk extract. The extraction method used is the soda pulping method with a solid to liquid ratio of 1:8 (w/v). The method used for testing the corrosion rate is the weight-loss method, UV-Vis Spectrophotometry and FT-IR are also used to analyze the lignin produced. The lowest corrosion rate was obtained in 1 M HCl corrosive medium with the addition of 3 g/L inhibitors at 48 hours immersion, which was 49.691 mpy. The highest inhibition efficiency was in 1 M HCl corrosive media solution with the addition of 3 g/L inhibitors at 48 hours immersion, which was 78.11%.
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Pradityana, Atria, Eddy Widiyono, Hari Subiyanto, Nur Husodo, and Muhammad Saiful Rizal. "Application of Psidium Guajava Leaf Extract as an Organic Inhibitor in Acid Solution and Temperature Variation." Key Engineering Materials 940 (January 30, 2023): 101–6. http://dx.doi.org/10.4028/p-1b8mqs.
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Corrosion is a change in the properties of a material, mainly metal, due to a reaction with the surrounding environment. One of The ways to inhibit corrosion is by adding inhibitors. Organic inhibitors are inhibitors that are considered environmentally friendly. In this study, the guava leaf extract of Psidium guajava was used as an organic inhibitor. Materials used are API 5L Grade B steel in 1M HCl solution as corrosive media with the concentration of the extract used in this study 1188ppm with a temperature variation of 30, 35, 40, 45, and 50 Celcius degrees. The types of tests carried out in this study were Electrochemical Impedance Spectroscopy and Potentiodynamic Polarization. The results of the potentiodynamic polarization test of organic inhibitors obtained an efficiency of 96.7550% with a corrosion rate of 1,04460 mm/year at a temperature of 30 degrees Celsius. In the electrochemical impedance spectroscopy test, the efficiency was 96,8546%, at a temperature of 30 degrees Celsius. The results of this study showed that the inhibitor of organic Psidium Guajava extract was The higher the temperature given to the inhibitor, it does not significantly affect the efficiency of the inhibitor, which acts the corrosion rate.
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Kamil, Faten H., Muthanna M. Kassim, Khulood A. Al-Saadie, Haider A. Almashhadani, Hazim I. Abdulhussain, Yousra M. Muhdi, Omer A. Ahmed, and Nabaa H. Abdul Razaq. "Corrosion Behaviour, Kinetic and Thermodynamic Studies of Water Hyacinth Extract as a Corrosion Inhibitor for Low-Carbon Steel." Iraqi Journal of Industrial Research 11, no. 3 (December 14, 2024): 35–44. https://doi.org/10.53523/ijoirvol11i3id490.
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Corrosion inhibitors are widely used in industry to reduce the corrosion rate of metals and alloys. Corrosion inhibitors adsorb onto metallic surfaces and insulate them from deterioration. Plants abundant in nature offer a cost-effective replacement for toxic chemical inhibitors on the market. The current research used the potentiostatic polarization technique at room temperature to explore the inhibitory impact of water hyacinth extract on the corrosion of low-carbon steel specimens in a 3.5% NaCl solution. The Tafel curve was used to assess corrosion inhibition activity, with the best inhibition efficiency reaching 79.36% at a concentration of 200 ppm. Cyclic polarization indicated the type of corrosion was general corrosion. The surface of carbon steel was investigated using Scanning Electron Microscopy (SEM) and Fourier Transform Infrared Spectroscopy (FTIR). FTIR analysis reveals the presence of alkaloid compounds, which are known corrosion inhibitors. In addition, the polarization behavior indicates that this inhibitor acts as a mixed-type inhibitor. Kinetic and thermodynamic parameters have been obtained from temperature studies. The higher activation energy than the blank (26.17 kJ/mol to 46.4 kJ/mol) suggests that an inhibitor has been deposited on the metal surface that is corroding, providing a resist layer to prevent corrosion. The low-carbon steel dissolution process is exothermic, as evidenced by the negative enthalpy of activation value. A positive increase in the activation entropy during the formation of the film layer suggests more disordering.
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Prabowo, Imam, Muhammad Ichsanudin, Muhammad Fuadi, Mochamad Mussoddaq, and Fajar Paundra. "COMPARATIVE ANALYSIS OF WATER-BASED INHIBITORS CONTAINING CDEA AND TEA AGAINST API 5L GRADE B." J-ENSITEC 11, no. 01 (December 5, 2024): 10180–88. https://doi.org/10.31949/jensitec.v11i01.11931.
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Corrosion of API 5L Grade B steel is a common challenge in industries where the material is exposed to corrosive environments, such as saline solutions. To combat this issue, corrosion inhibitors are often used to protect the steel. This study explores the effectiveness of two inhibitors—Triethanolamine (TEA) and Cocamide DEA (CDEA)—in reducing corrosion on API 5L Grade B steel. By calculating the corrosion rate and inhibitor efficiency, we evaluated the protective properties of each substance. The results showed that TEA provided better corrosion protection, with a corrosion rate of 0.00045 mpy, compared to CDEA’s rate of 0.0009 mpy. Additionally, TEA demonstrated a higher inhibitor efficiency of 70.97%, while CDEA showed only 41.94%. These findings suggest that TEA is a more effective choice for preventing corrosion in API 5L Grade B steel, offering a viable solution to enhance the material’s durability in harsh environments.
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Xie, Jianli, Jiayuan Hu, Jundong Lu, and Xinmin Li. "Inhibiters replacement of chilled water system in nuclear unit." Anti-Corrosion Methods and Materials 64, no. 4 (June 5, 2017): 418–23. http://dx.doi.org/10.1108/acmm-02-2016-1647.
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Purpose The purpose of this paper was to study the corrosion control of B10 copper-nickel alloy using the LiOH-N2H4 compound inhibitors and to evaluate the feasibility of replacing the original inhibitors (NaNO2-Na2MoO4) with the new ones (LiOH-N2H4) for the chilled water system in a nuclear unit. Design/methodology/approach The corrosion resistance performance of B10 copper-nickel alloy was evaluated during the whole replacement process of inhibiters using electrochemical tests and surface analysis techniques. Findings The results indicated that the corrosion of B10 copper-nickel alloy could be prevented effectively using LiOH to increase the pH value of solution higher than 10.0 and using N2H4 to consume dissolved oxygen. During the replacement process of inhibitors from NaNO2-Na2MoO4 to LiOH-N2H4, the corrosion resistance performance of B10 copper-nickel alloy had not decreased greatly. The new LiOH-N2H4 inhibitor, which could enhance the compactness of rust, was able to reduce the corrosion rate of rusted B10 metal. Originality/value It is feasible and operable to replace the NaNO2-Na2MoO4 inhibitors with the LiOH-N2H4 inhibitors for the corrosion prevention of B10 copper-nickel alloy. The research results can provide guidelines for the inhibitor selection of chilled water system in a nuclear unit.
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Taranza, Luboš, and Rostislav Drochytka. "Corrosion Inhibitors as a Prevention." Advanced Materials Research 897 (February 2014): 144–48. http://dx.doi.org/10.4028/www.scientific.net/amr.897.144.
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Corrosion of reinforcements is one of the most frequent causes of defects of reinforced concrete structures resulting in significantly shortened service life of constructions. By using of corrosion inhibitors the structure failures can be prevented or already started corrosions slowed down and thus to markedly prolong the service life of constructions.
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Sanni, Omotayo, Samuel Ayodele Iwarere, and Michael Olawale Daramola. "Investigation of Eggshell Agro-Industrial Waste as a Potential Corrosion Inhibitor for Mild Steel in Oil and Gas Industry." Sustainability 15, no. 7 (April 3, 2023): 6155. http://dx.doi.org/10.3390/su15076155.
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Corrosion inhibitors are generally used in reducing metallic corrosive effects. Nevertheless, most inhibitory compounds have harmful effects on the environment, as well as being expensive and toxic. Therefore, there is growing awareness of the need to replace petroleum inhibitors with eco-friendly inhibitors. Eggshell agro-industrial waste (ESAW) is a compound with high inhibitive activity and its utilization is desirable to minimize the quantity of agricultural waste generated. Hence, this study aims to demonstrate the inhibition efficiency of eggshell extract, a waste compound, on mild steel (material frequently utilized in the oil and gas sector) in one molar hydrochloric acid solution accessed via weight loss and electrochemical methods. Potentiodynamic polarization results shows that the current densities of mild steel corrosion significantly decreased using eggshell agro-industrial waste. Similarly, electrochemical impedance spectroscopy results suggest that eggshell agro-industrial waste enhances the mild steel polarization resistance significantly. The inhibitor performance increases with increasing eggshell agro-industrial waste concentration, with optimum efficiency of 97.17%. The inhibition was due to the adsorption and adhesion of the eggshell agro-industrial waste constituents on the surface of the mild steel; the adsorption obeys the Langmuir adsorption isotherm model. Compared with various reported corrosion inhibitors in the literature, eggshell agro-industrial waste is very effective. Therefore, eggshell agro-industrial waste can be recommended as a potential inhibitor in the oil and gas sector.
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Samosir, Damianus, and Syarifuddin Oko. "PROTEKSI KOROSI PADA BAJA API 5L DENGAN INHIBITOR ORGANIK EKSTRAK DAUN BAWANG DAYAK (Eleutherme Americana Merr) DALAM LINGKUNGAN HCL 0,5 M." JURNAL TEKNIK KIMIA VOKASIONAL (JIMSI) 3, no. 1 (March 31, 2023): 1–7. http://dx.doi.org/10.46964/jimsi.v3i1.362.
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Corrosion is a decrease in metal quality due to an electrochemical reaction with its environment. Many factors can cause corrosion of a material. One of them is due to the influence of the concentration of chloride acid dissolved in water media so that the environment is corrosive (acidic). Corrosion can occur in various forms, ranging from uniform corrosion on the entire metal surface to corrosion that is concentrated in certain parts. There are many methods to inhibit the corrosion process. One of the many methods is the use of inhibitors. Organic inhibitor is a type of inhibitor that is non-toxic, inexpensive, readily available in nature, easy to renew and does not damage the environment. These organic inhibitors are obtained by extracting some materials that exist in nature. In this study, the inhibitor used was Dayak leek. The inhibitor is used on API 5L steel material in 0.5M HCl media. The method used to retrieve the steel corrosion rate data using the weight loss method. The inhibition efficiency reached 99.02% for the addition of an inhibitor with a concentration of 5% with an immersion time of 10 days with a corrosion rate of 4.46 mpy.
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., Sutrisno. "Pengaruh Ekstrak Daun Melinjo Terhadap Laju Korosi Pada Material Baja." JURNAL PILAR TEKNOLOGI Jurnal Ilmiah Ilmu Ilmu Teknik 8, no. 2 (December 29, 2023): 7–10. http://dx.doi.org/10.33319/piltek.v8i2.165.
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In the rapid development of industry and construction in the current era, iron is a material that is widely used as a material in construction activities around the world. However, iron has the disadvantage of being very susceptible to corrosion. Corrosion is a decrease in metal quality due to electrochemical reactions with the environment. One of the corrosion prevention measures taken against iron is the addition of corrosion inhibitors to inhibit the corrosion rate. Inhibitors from natural materials are an alternative as an environmentally friendly inhibitor. This study aims to determine the efficiency of using melinjo leaf extract inhibitor in inhibiting corrosion rate in 3% Nacl corrosive media. The method used is the mass loss method to see the value of the corrosion rate. This study uses ST 37 steel plate material with a size of 2x1.5x0.12 cm. The concentration variation of melinjo leaf extract is 0%, 3%, 6%, and 9% with a soaking time of 14 days. The results showed that the addition of melinjo leaf extract as an inhibitor can reduce the corrosion rate with the smallest corrosion rate of 0.0449 mmpy and the greatest inhibitor efficiency is at a concentration of 9% at 51.72%.
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Gusakov, Viktor N., Gulnara Z. Raskildina, and Semen S. Zlotsky. "SYNTHESIS AND TESTING OF ACTIVE BASES FOR CORROSION INHIBITORS." Oil and Gas Business, no. 5 (November 17, 2023): 33–54. http://dx.doi.org/10.17122/ogbus-2023-5-33-54.
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The results of electrochemical testing of new active bases for the creation of commercial corrosion inhibitors under conditions simulating general and local corrosion are described. General corrosion using corrosion current, working electrode geometry, State Standard 9.506-87 methodology was calculated. The anodic polarization of the working steel electrode was a physical model and the basis for calculating local corrosion. The protective effect of reagents for the model environments of the Ural-Volga region and Western Siberia oilfields (Samotlor oilfield) were determined. Comparative measurements of the corrosion rate of substituted 1,3-dioxanes, ethanolamine benzoate with a commercial corrosion inhibitor were carried out. It was found that the best protective effect against general corrosion at the level of a commercial imidazoline-type corrosion inhibitor in the model environment of the Ural-Volga region (according to State Standard 9.506-87) and Western Siberia oilfields (Samotlor oilfield) has ethanolamine benzoate. Electrochemical modeling of local corrosion and measurement of the protective effect showed that ethanolamine benzoate has an inhibitory effect on the rate of local corrosion in the model environment of Ural-Volga oilfields and is promising for modifying commercial inhibitors and expanding the efficiency of these reagents.Reducing the risk of local corrosion requires special testing under conditions of simulation of this type of corrosion for commercial reagents.
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Malau, Viktor, and Wisnu Hakiki. "Chromate and Molybdate Inhibitors Effects on Corrosion Charateristic of API 5L Grade B in a Brine Water Solution Containing 8 % NaCl." Key Engineering Materials 892 (July 13, 2021): 115–23. http://dx.doi.org/10.4028/www.scientific.net/kem.892.115.
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Piping systems at gathering stations in the oil and gas industries often fail due to corrosion attacks from the brine water solution containing 8% NaCl that flows through the system. This solution is highly corrosive on the API 5L grade B steel pipes, thereby shortening its lifespan, with an increase in the frequency of pipe replacements. However, the corrosion resistance of API 5L grade B pipes can be improved by using chromate and molybdate inhibitors. Therefore, the objective of this research is to improve the corrosion resistance of the steel pipes using sodium chromate (Na2CrO4) and sodium molybdate (Na2MoO4) inhibitors with concentrations of 0.2, 0.4, 0.6, 0.8 and 1,0%. This research also aim to determine the optimum concentration of inhibitors to produce minimum corrosion rate, by testing the brine water solution containing 8% NaCl through the potentiodynamic polarization method. The results show that generally, the addition of sodium chromate and sodium molybdate inhibitors to the brine solution causes the steel pipes to be more resistant to corrosion. Furthermore, the sodium chromate inhibitor concentration of 0.6% produces the greatest corrosion potential of – 400 mV with the lowest rate of 0.38 mpy, while sodium molybdate concentration of 0.4% produces the highest corrosion potential of – 385 mV with the lowest rate of 0.34 mpy. The results of SEM observations at 0.4% sodium molybdate concentration showed that the corrosion inhibition/passivation effect of the inhibitor made the steel surface smoother, while the sodium chromate inhibitor at similar percentage failed to reach the optimal concentration to inhibit the corrosion process.
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Goni, Lipiar K. M. O., Mohammad A. Jafar Mazumder, Divya B. Tripathy, and Mumtaz A. Quraishi. "Acridine and Its Derivatives: Synthesis, Biological, and Anticorrosion Properties." Materials 15, no. 21 (October 28, 2022): 7560. http://dx.doi.org/10.3390/ma15217560.
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The phenomenon of corrosion threatens metallic components, human safety, and the economy. Despite being eco-friendly and promising as a corrosion inhibitor, acridine has not been explored to its full potential. In this review, we have discussed multiple biological activities that acridines have been found to show in a bid to prove that they are environmentally benign and much less toxic than many inhibitors. Some synthetic routes to acridines and substituted acridines have also been discussed. Thereafter, a multitude of acridines and substituted acridines as corrosion inhibitors of different metals and alloys in various corrosive media have been highlighted. A short mechanistic insight into how acridine-based compounds function as corrosion inhibitors have also been included. We believe this review will generate an impression that there is still much to learn about previously reported acridines. In the wake of recent surges to find efficient and non-toxic corrosion inhibitors, acridines and their analogs could be an appropriate answer.
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Lin, Hai, Xiaorong Chen, Zhongming Luo, Jun Xu, Ping Lu, Tianyi Xie, Jiayi Tang, and Hu Wang. "Corrosion Inhibition Properties of Corrosion Inhibitors to under-Deposit Corrosion of X65 Steel in CO2 Corrosion Conditions." Molecules 29, no. 11 (June 1, 2024): 2611. http://dx.doi.org/10.3390/molecules29112611.
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Under-deposit corrosion is widely present in the pipelines of oil and gas production, causing significant corrosion damage. In this paper, a novel electrochemical cathodic-polarization method was carried out to accelerate the formation of CaCO3 scale on a X65 steel surface in a simulated solution containing scaling ions. Subsequently, pre-scaled X65 steel was placed in a high temperature and pressure autoclave to conduct corrosion weight-loss experiments and in situ electrochemical measurements. The study mainly compared the corrosion inhibition behavior of four quaternary ammonium salt corrosion inhibitors, pyridinium quaternary salt (BPC), quinolinium quaternary salt (BQC), 8-hydroxyquinolinium quaternary salt (BHQ) and pyridinium (1-chloromethyl naphthalene) quaternary salt (1-CPN), in a simulated oilfield scale under corrosive conditions. The results of the weight-loss experiments demonstrated that the inhibition efficiencies of the corrosion inhibitors from high to low were as follows: 1-CPN < BHQ < BQC < BPC. The in situ electrochemical measurements showed that the immersion time and type of corrosion inhibitor had a pronounced influence on the corrosion and corrosion inhibition behavior of X65 steel with CaCO3 coating. It was also proved using both EIS and PC that 1-CPN shows the best inhibition performance in all. Lastly, the inhibition mechanism of corrosion inhibitors at under-deposit conditions was analyzed via a surface morphology observation of SEM.
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Rostron, Paul, and Sonia Kasshanna. "Novel Synthesis of Vegetable Oil Derived Corrosion Inhibitors." International Journal of Corrosion 2015 (2015): 1–7. http://dx.doi.org/10.1155/2015/851698.
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Two different naturally occurring vegetable oils, Cress seed oil, and Linseed oil were chemically modified via novel one pot synthesis to produce fatty acid derived amides. These were characterized by their ability to prevent corrosion of carbon steel in vigorously stirred, aerated seawater, one of the most corrosive naturally occurring environments. Corrosion inhibitor efficiencies of up to 99.6% or a corrosion rate reduction factor of 250 in this medium is reported. The one pot synthetic strategy means that the corrosion inhibitors can be made at very low cost.
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Elvis Gilmar Gonzales-Condori, Janeth Marlene Quispe-Avilés,. "Review and Study of the Inhibiting Character of Coffee Husk Extract to Reduce Corrosion Rate in Stainless Steel-AISI 440 in 1M H2SO4 Acid Medium Validated by Techniques Electrochemical – EIS." Journal of Electrical Systems 20, no. 5s (April 13, 2024): 489–95. http://dx.doi.org/10.52783/jes.2263.
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Corrosion problems in industrial sectors, it is necessary to use corrosion inhibitors, most of the compounds used in the manufacture of inhibitors are very toxic. The use of green corrosion inhibitors has been studied with great intensity for the development of sustainable economies that promote the care of the environment through ecological alternatives and of low cost. Plant extracts are biodegradable and represent a renewable source of chemical compounds. In this work the coffee husk was used as a corrosion inhibitor, the material studied was a stainless steel AISI 440 in 1M H2SO4 medium. EIS tests were performed to compare the inhibitory effect. The results showed that in fact, the addition of coffee extract in the solutions rich in sulfuric acid was able to inhibit pitting and localized corrosion in stainless steel.
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Prabhu, S. Arun, M. Syed Ali Padusha, and S. S. Syed Abuthahir. "Corrosion Inhibition Potential of Aqueous Extract of Bauhinia acuminata Linn Leaves on Carbon Steel in Hydrochloric Acid Medium." Asian Journal of Chemistry 36, no. 10 (September 30, 2024): 2275–82. http://dx.doi.org/10.14233/ajchem.2024.32176.
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The corrosion of carbon steel in 1 N HCl was analyzed using an aqueous Bauhinia acuminata Linn (BaL) leaf extract. Weight loss method was used to determine the inhibitor efficaciousness and corrosion rate. When dissolved in water, a linneus plant leaf extract exhibit an inhibitory effect which is proportionate to the amount of inhibitors present. It is possible to speed up the corrosion process by increasing the inhibitors’ concentration. Studies have shown that the BaL leaves extract has a 97.30% inhibitory efficiency. By increasing the concentration of inhibitor solutions, a surface layer forms on carbon steel, which inhibits the activity of the active site. The potentiodynamic polarization (PDP) and AC impedance studies (EIS) were employed to examine the mechanical properties of corrosion inhibition. The surface homogeneity and irregularity of carbon steel were examined using AFM and SEM under polished, corroded and inhibitor-treated surfaces. The surface irregularity of the carbon steel were analyzed using atomic force microscopy.
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AL-AMIERY, AHMED A., WAN MOHD NORSANI WAN NIK, MOHD SABRI MOHD GHAZALI, EMED YOUSIF, WAN NOR ROSLAM WAN ISAHAK, WALEED KHALID AL-AZZAWI, MOHAMMAD FAKHRATUL RIDWAN ZULKIFLI, WALID DAOUDI, IZIONWORU O. VINCENT, and DINESH Y. DHANDE. "RECENT INNOVATIONS IN ORGANIC INHIBITORS FOR MILD STEEL IN CORROSIVE SOLUTIONS: A MINI REVIEW." JOURNAL OF SUSTAINABILITY SCIENCE AND MANAGEMENT 19, no. 5 (May 31, 2024): 145–72. http://dx.doi.org/10.46754/jssm.2024.05.009.
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Corrosion of mild steel in corrosive solutions is one of the major concerns in industries such as oil and gas, petrochemical and marine. The use of organic inhibitors has proven to be an effective method to protect mild steel from corrosion. This mini-review summarised recent innovations in organic inhibitors for mild steel in corrosive solutions. This article discusses the types of organic inhibitors, including adsorption, film-forming, mixed, synergistic and green inhibitors, their mechanism of action, and their application in various corrosive environments. The article then highlights recently published inhibitors such as quinoline derivatives, Schiff bases, amino acids, and polymers. These inhibitors have shown promising results in protecting mild steel from corrosion. The mini-review concludes by discussing the prospects of organic inhibitors for mild steel in corrosive solutions. Overall, this mini-review provides valuable insights into recent innovations in organic inhibitors for mild steel in corrosive solutions, which are useful for researchers and industries working on corrosion protection.