Journal articles: 'Corrosion protection'

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Monika, Monika, and Jarosław Frydrych. "Olej ochronny o niskiej lepkości do czasowej ochrony elementów metalowych przed korozją." Nafta-Gaz 76, no. 11 (November 2020): 864–69. http://dx.doi.org/10.18668/ng.2020.11.12.

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Corrosion of metals is the gradual destruction of metal under the impact of environmental factors. Chemical or electrochemical processes on the surface of the metal cause irreversible changes in the structure of the metal. To prevent this, during storage or transport, the surfaces of metal elements must be protected against environmental factors, which include: high air humidity, acid rain and variable temperature. These factors accelerate the corrosion process, which cannot be eliminated, but can be reduced by protecting metal elements with e.g. protective oils. Some metals have the ability to passivate, which is a natural protective agent that prevents corrosion. It consists in the formation of an oxide of this metal on the metal surface. Where there is no natural protection against corrosion, protective measures must be used. This paper presents the technology for the production of protective oil for temporary protection against corrosion. The innovation of this project is that the oil will form a thin, well adhering protective layer on the metal surface, which can be easily removed. It is characterised by very low viscosity and low dripping time. It is possible to achieve by using proper base oil with carefully selected anti-corrosion additives. Based on the standard PN-75/C-04154 Petroleum products. Rust protection by metal preservatives the humidity cabinet test method, corrosion tests were carried out. The paper presents the results of a humidity cabinet test for an oil mixture based on deeply refined base oil and properly selected refining additives. The test results confirmed very good anti-corrosive properties of the developed oil due to the use of a corrosion inhibitor and an oxidation inhibitor. The thickness of the protective layer formed on the metal surface was calculated based on a mathematical formula. The resulting layer forms a thin oil film, easy to remove and protecting the metal surface from corrosion.

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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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Martyniuk, R. T. "ANTI-CORROSION PROTECTION OF PIPELINES." PRECARPATHIAN BULLETIN OF THE SHEVCHENKO SCIENTIFIC SOCIETY Number, no. 18(68) (December 1, 2023): 157–65. http://dx.doi.org/10.31471/2304-7399-2023-18(68)-157-165.

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Currently, in our country, the issue of protecting metals from corrosion has achieved high results, so there is a big gap between the achievements of scientific research in this direction and their use in industry. It is necessary to develop and implement highly effective methods of increasing the strength, corrosion resistance, heat and cold resistance of metals and alloys. Popularization, dissemination and implementation of effective methods of protection against corrosion and corrosive-mechanical destruction of machines, devices, equipment and metal structures are of great importance. During surface-plastic deformation, a chip is not formed, but a fine plastic deformation of the surface layer takes place. As a result, the surface layer is strengthened, wear resistance and resistance to corrosive environment increases. In many cases, the use of surface-plastic deformation makes it possible to increase the safety margin of parts working under variable loads by 1.5 to 3 times, and to increase the service life of parts. The paper examines directions for increasing the stability of parts of oil industry equipment by the method of surface plastic deformation, for resistance against various types of corrosion and corrosive-mechanical destruction. Fatigue is the phenomenon of gradual accumulation of material damage under the action of variable loads, which leads to changes in the properties of crack formation, their development and destruction. The processes of metal fatigue have been studied by many researchers, many hypotheses have been put forward, but the nature of fatigue remains largely unexplained.

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Volkland, H. P., H. Harms, O. Wanner, and A. J. B. Zehnder. "Corrosion protection by anaerobiosis." Water Science and Technology 44, no. 8 (October 1, 2001): 103–6. http://dx.doi.org/10.2166/wst.2001.0475.

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Biofilm-forming bacteria can protect mild (unalloyed) steel from corrosion. Mild steel coupons incubated with Rhodoccocus sp. strain C125 and Pseudomonas putida mt2 in an aerobic phosphate-buffered medium containing benzoate as carbon and energy source, underwent a surface reaction leading to the formation of a corrosion-inhibiting vivianite layer [Fe3(PO4)2]. Electrochemical potential (E) measurements allowed us to follow the buildup of the vivianite cover. The presence of sufficient metabolically active bacteria at the steel surface resulted in an E decrease to -510 mV, the potential of free iron, and a continuous release of ferrous iron. Part of the dissolved iron precipitated as vivianite in a compact layer of two to three microns in thickness. This layer prevented corrosion of mild steel for over two weeks, even in a highly corrosive medium. A concentration of 20 mM phosphate in the medium was found to be a prerequisite for the formation of the vivianite layer.

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Vögtlin, C. "Corrosion Protection." Key Engineering Materials 20-28 (January 1991): 2871–74. http://dx.doi.org/10.4028/www.scientific.net/kem.20-28.2871.

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Vögtlin, C. "Corrosion Protection." Key Engineering Materials 20-28 (January 1991): 2875–79. http://dx.doi.org/10.4028/www.scientific.net/kem.20-28.2875.

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BODEN, P. J. "Corrosion and Corrosion Protection Handbook." Surface Engineering 5, no. 4 (January 1989): 279–80. http://dx.doi.org/10.1179/sur.1989.5.4.279.

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Boden, P. J. "‘Corrosion and corrosion protection handbook’." British Corrosion Journal 24, no. 3 (January 1989): 179. http://dx.doi.org/10.1179/000705989798270009.

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Reitz, W. "CORROSION AND CORROSION PROTECTION HANDBOOK." Materials and Manufacturing Processes 8, no. 2 (March 1993): 269–70. http://dx.doi.org/10.1080/10426919308934831.

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Saloum, S., B. Alkhaled, W. Alsadat, M. Kakhia, and S. A. Shaker. "Plasma polymerized hexamethyldisiloxane thin films for corrosion protection." Modern Physics Letters B 32, no. 03 (January 29, 2018): 1850036. http://dx.doi.org/10.1142/s0217984918500367.

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This study focused on the corrosion protection performance of plasma polymerized HMDSO thin films in two different corrosive medias, 0.3M NaCl and 0.3M H2SO4. The pp-HMDSO thin films were deposited on steel substrates for electrochemical tests using the potentiodynamic polarization technique, they were deposited also on aluminum and silicon substrates to investigate their resistance to corrosion, through the analysis of the degradation of microhardness and morphology, respectively, after immersion of the substrates for one week in the corrosive media. The results showed promising corrosion protection properties of the pp-HMDSO thin films.

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Farag, Ahmed A. "Applications of nanomaterials in corrosion protection coatings and inhibitors." Corrosion Reviews 38, no. 1 (February 25, 2020): 67–86. http://dx.doi.org/10.1515/corrrev-2019-0011.

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AbstractVarious methodologies are practically used to control corrosion. Coatings are the most widely used to protect metals against corrosion. However, due to the weak resistance of polymer coating against the penetration of corrosive solution to the metal/coating interface, the long-term corrosion resistance of the polymer coating is reduced gradually. Recently, nanoparticles have been added to coatings to improve their chemical, mechanical and optical properties. Nanocoatings either have constituents in the nanoscale or are made out of layers that are under 100 nm. Nanocoatings are used effectively to lessen the impact of a corrosive environment due to its various preferences, such as surface hardness, adhesive quality, long haul and, additionally, high-temperature corrosion opposition, and to improve its tribological properties, and so forth. Moreover, nanocoatings can be utilized in more slender and smoother thickness, which permits adaptability in equipment design and lower upkeep and working expenses. This review covers applications related to the management of metal corrosion, including the use of nanomaterials to produce high-performance corrosion inhibitors and corrosion-resistant coatings.

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Patel, Jasbir N., Andre Chang, Haleh Shahbazbegian, and Bozena Kaminska. "Adaptive Corrosion Protection System Using Continuous Corrosion Measurement, Parameter Extraction, and Corrective Loop." International Journal of Corrosion 2016 (2016): 1–11. http://dx.doi.org/10.1155/2016/9679134.

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A simple current-sourced adaptive corrosion protection system (ACPS) along with a technology to extract the protection current from the Tafel plot is presented. For reliable protection of the target metal, first, the Tafel plot of the target metal is obtained. Subsequently, a novel technique proposed in this paper is used to extract the protection current from the Tafel plot. This extracted protection current is fed to the target metal to protect the metal in the existing corrosive environment. This three-part system is adaptively used to update the required protection current to effectively protect the target metal continuously. All these functionalities are integrated in a stand-alone ACPS that effectively diagnoses the corrosion status and updates the protection parameters without any manual interaction or physical modification of the set-up to offer modularity, reliability, and cost saving. To validate the technique, a laboratory scale system is realized and tested using various metal samples and various corrosive mediums. Using the experimental system, A36 metal coupons are effectively protected with protection (inhibition) efficiency of 40–100%in different corrosive mediums that can extend the life expectancy of the target metal from ~2 times to more than 100 times for the tested corrosive mediums.

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13

Sуza, О., О. Savchenko, О. Korolev, and S. Huta. "ANTI-CORROSION PROTECTION OF MILITARY EQUIPMENT." Наукові праці Державного науково-дослідного інституту випробувань і сертифікації озброєння та військової техніки, no. 12 (July 5, 2022): 119–26. http://dx.doi.org/10.37701/dndivsovt.12.2022.12.

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Corrosion of metals is a key problem for military equipment, weapons and ammunition. Its pernicious impact leads to losses of both the metal itself and the fact that corrosion wear of parts of mechanisms, assemblies reduce the accuracy and reliability of their action, as a result, and the readiness of the equipment. Therefore, protection against corrosive destruction of military equipment, weapons and ammunition is an urgent aim of today. To prevent corrosion processes, a rational method of protection is the use of inhibitors, which, at low capital costs, prevent the destruction of equipment, structures and mechanisms. Therefore, inhibitors are added to some lubricating oils that have long-term contact with metals and alloys, and wear of parts as a result, corrosion is reduced. Such lubricants can be used as corrosion protection by applying them on a metal surface. Inhibitors based on mustard oil are designed to protect the surfaces of steel equipment and communications operated in acidic and neutral working environments and have a high protective effect – 95-99.5%. The article considers the issues of anticorrosion protection increase of steel surfaces by introducing an effective environmentally-safe corrosion inhibitor into the composition of anti-friction lubricant used in the operation and storage of military equipment, weapons and ammunition. The introduction of the inhibitor increases the anti- corrosion properties of the lubricant by forming a protective adsorption film on the steel surface that prevents the corrosion activators from accessing the metal, which is confirmed by the results of the electronic spectrometry.

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PAN, TONGYAN, QIFENG YU, and TAO MIAO. "SYNTHESIZING AND CHARACTERIZING A WATERBORNE POLYANILINE FOR CORROSION PROTECTION OF STEELS." Surface Review and Letters 22, no. 02 (April 2015): 1550021. http://dx.doi.org/10.1142/s0218625x15500213.

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This study explores the idea of synthesizing and characterizing a new intrinsically conducting polyaniline that at the molecular level carries a hydrophilic component, making the polymer highly waterborne and thereby applicable to massive production for corrosion protection of steels. The waterborne polyaniline was mixed in a water-based epoxy and then coated on SAE 1008/1010 steel samples for evaluating its anti-corrosion capacity using a powerful surface-analysis tool, Scanning Kelvin Probe Force Microscopy (SKPFM). The high resolution surface topography and corrosion potential of steel samples coated with the Polyaniline-based primer, as studied by SKPFM, show significantly lower corrosion activities than two control groups: uncoated steel samples and epoxy-only coated samples that were also subjected to SKPFM analyses under the same corrosive condition. The surface analysis results indicate that this new waterborne polyaniline is capable of protecting steels from corrosion when mixed in conventional water-based epoxies, opening the door to the development of an economical and long-life coating for corrosion protection of steel structures.

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Han, Lanruo, Qianyi Pang, and Xiang Yu. "Application of Organic Coating in Marine Anticorrosion." Highlights in Science, Engineering and Technology 58 (July 12, 2023): 131–41. http://dx.doi.org/10.54097/hset.v58i.10051.

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The development of navigation technology has increased maritime trade and the corrosion problem of ships has received more and more attention. Marine corrosions are mainly electrochemical, mechanical and biological corrosion. Normally, the countermeasures for marine corrosion include sacrificial anode protection, applied current cathodic protection and anti-corrosion coating. However, the first two still have great shortcomings. The sacrificial anode protection is limited by the potential difference between the metal electrodes, and the protection range is small. The applied current cathodic protection requires continuous external batteries, and the cost of detection and maintenance is high. The anticorrosive coating not only has excellent anticorrosive performance, but also has the advantages of simple operation process and low cost. Hence, anticorrosive coatings have been gradually applied to ship anticorrosion. Finally, this paper reviews the application of organic coating method in ship mooring corrosion protection, and introduces three kinds of epoxy anticorrosive coatings, polyurethane anticorrosive coatings and graphene anticorrosive coatings to meet the increasingly stringent development requirements of marine anticorrosive coatings.

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Zhao, Wenwen, Feixiang Li, Xianghong Lv, Jianxiu Chang, Sicong Shen, Pan Dai, Yuan Xia, and Zhongyue Cao. "Research Progress of Organic Corrosion Inhibitors in Metal Corrosion Protection." Crystals 13, no. 9 (August 30, 2023): 1329. http://dx.doi.org/10.3390/cryst13091329.

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Metal materials are vulnerable to corrosion in the process of production and service, which often leads to serious disasters, including the decline of the performance of metal components and the shortened service life, and even causes catastrophic accidents and ecological damage. Adding a certain amount of corrosion inhibitors (CIs) to the corrosive medium is a simple, efficient, and economical anti-corrosion method to slow down and restrain the corrosion of metal materials. Organic corrosion inhibitors (OCIs) are considered to have good application prospects and are widely used for surface anti-corrosion of metal materials, as they generally have advantages such as good metal adsorption, low oxidation resistance, good thermal and chemical stability, and green environmental protection. This paper systematically summarized some major OCIs, including alkyl chains, imidazoles, and pyridines, and their structural characteristics, as well as the action mechanism of OCIs. Moreover, this paper discusses some natural compounds used as environmentally friendly CIs and provides a prospect for the development trend of OCIs.

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Yao, Guowen, Xuanbo He, Jiawei Liu, Zengwei Guo, and Pengyu Chen. "Test Study of the Bridge Cable Corrosion Protection Mechanism Based on Impressed Current Cathodic Protection." Lubricants 11, no. 1 (January 12, 2023): 30. http://dx.doi.org/10.3390/lubricants11010030.

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The cable system is an important bearing element of a bridge with stay cables or slings and a matter of major concern in the safety of the bridge structure. Bridge cables are vulnerable to corrosion induced by leakage and soaking during their service life. To solve this problem, and based on the idea of proactive control by means of the impressed current cathodic protection (ICCP) of bridge cables, this study designs and develops an ICCP system device for bridge cable protection. In this study, an accelerated corrosion test was conducted to test the ICCP system of steel wires inside the cables and the cables under acid rain conditions. The corrosion protection behavior of ICCP was analyzed to reveal the corrosion protection mechanism of bridge cable ICCP. The results show that in the cable ICCP system, the impressed current generated by a more negative voltage may improve the efficiency of corrosion protection, but an excessively negative voltage may cause hydrogen embrittlement of the cable steel wire due to overprotection. The rational range of −1.13 V to −1.15 V was set as the result of the overall consideration. Within this range, the cable is subject to the joint protection of ICCP and sacrificial anode cathodic protection (SACP). Corrosive products can delay the development of cable corrosion to a certain degree; the SACP protection efficiency of the galvanized coat reduces gradually with corrosion development; and cable ICCP protection efficiency increases gradually. The ICCP for cable corrosion protection is transformed from joint protection using both a sacrificial anode and impressed current into protection, mainly using an impressed current.

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Lyon, Stuart. "Corrosion protection for sustainability – watching paint dry." Open Access Government 37, no. 1 (January 6, 2023): 254–55. http://dx.doi.org/10.56367/oag-037-10473.

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Corrosion protection for sustainability – watching paint dry Stuart Lyon, AkzoNobel Professor of Corrosion Control, looks at corrosion's cost to industrialised economies and the importance of corrosion protection – where car vehicle bodies suffer from rust perforation within a few years of purchase. Now manufacturers offer anti-perforation warranties for up to 12 years. Corrosion – the deterioration and loss of materials and their functional properties by environmental exposure – remains a significant cost to industrialised economies. Therefore the most practical and effective means of protection is to apply a coating, and the most widely used are paint coatings. Corrosion-protective organic coatings are engineered to optimise application (onto challenging surfaces) and lifetime performance. They comprise many ingredients including functional pigments that chemically inhibit the corrosion process, components that provide desired physical properties including hardness, wetting agents, rheology modifiers to enable correct surface flow from spray or brush application, etc. Overall, high-resolution analytical tools to probe the structure and chemistry of coatings and the interfaces between their constituent parts are being explored in the University of Manchester.

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P.C.S.H. "Corrosion Protection Conference." Platinum Metals Review 31, no. 1 (January 1, 1987): 25. http://dx.doi.org/10.1595/003214087x3112525.

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Li, Zheng, Lei Jiang Yao, and Xiao Yan Tong. "Development and Utilization of Database on Corrosion of Ocean Engineering Materials and Structures." Advanced Materials Research 156-157 (October 2010): 1331–34. http://dx.doi.org/10.4028/www.scientific.net/amr.156-157.1331.

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Corrosion of ocean engineering structures leads huge economic loses each year. Corrosion protection technology has already become a very important method for design and manufacture of ocean engineering structures. To decrease corrosive loses and guarantee the safety of engineering structures, extensive studies are invested to understand corrosion mechanisms and rules of engineering materials, and to develop technologies on corrosion control and protection. These research projects have produced and are producing a great amount of test data, reports, products, experiences, and so on. If all these data resources can be collected and organized in a unified platform, it will take great advantages for products design or manufacture on corrosion protection. A database, named Database on Corrosion of Ocean Engineering Materials and Structures (CDOSDB), was planned. For a designer or manufacturer, it should be considered in serving environment, corrosion property of material, methods on corrosion protection, and experiences on protection of real engineering structures. So, the CDOSDB is mainly include ocean environmental information, test data in real sea, simulating test data in lab, methods and products on corrosion protection, survey on corrosion status and protection of real engineering structures, corrosion knowledge and corrosion models. Because the related data and information were collecting from different research institutes and publications, in order to make full use of them, a uniform specification are arranged and standardized. A website is designed and the web addresses is http://www.dematers.com. It makes the database sharable.

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Petrilin, Dmitry Andreevich. "Analysis of the fire and explosion hazard of the formation of corrosive deposits on the inner surface of tanks with sulfurous oil." Technology of technosphere safety 97 (2022): 74–83. http://dx.doi.org/10.25257/tts.2022.3.97.74-83.

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Introduction. The annual number of fires at the facilities of the petrochemical industry is increasing. Spontaneous combustion of pyrophoric corrosive deposits is one of the main sources of ignition. The large damage caused by fires on tanks with sulfur oil indicates a serious danger of the formation of pyrophoric corrosive deposits on the surface of oil tanks. The purpose of the study. Analyze the fire and explosion hazard of the formation of pyro-form corrosion deposits on the surface of oil tanks. The tasks of the work: - analysis of statistics of accidents that occurred at the facilities of the petrochemical industry; - analysis of fires that occurred due to spontaneous combustion of pyrophoric corrosive deposits; - analysis of the danger of formation of corrosive deposits on the surface of oil tanks, protection systems against them. Methods. In the course of the work, methods of comparison, description, generalization were used. The information basis of the study was various literary sources, regulatory documents, materials of fire analysis at tank farms. Results and discussion. The practice of operating oil tanks during the storage of sulfurous oil and the origin of fires shows that modern methods of corrosion protection are ineffective. It is necessary to adjust the existing regulatory and legal documentation in the field of improving the fire and explosion safety of petrochemical industry facilities, to develop new, more effective means of anticorrosion protection of tanks with sulfurous oil. One of the methods to protect the oil tank from corrosion is to apply protective coatings on the inner surface of the tank. However, modern anticorrosive coatings do not have the required protective ability. Conclusion. The corrosion protection system currently used is insufficiently effective. At the same time, the problem of protecting the inner surface of sulfurous oil tanks by applying anticorrosion paint coatings has not been sufficiently studied. Therefore, a more thorough study of this issue is necessary in order to increase the fire and explosion safety of sulfur oil tanks. Keywords: fire and explosion safety, tank, corrosion, pyrophores, protection, oil, sulfur.

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Zhao, Xuejie, Yujie Yuan, Yuankun Wei, Zhe Zhang, and You Zhang. "LDH-Based “Smart” Films for Corrosion Sensing and Protection." Materials 16, no. 9 (April 30, 2023): 3483. http://dx.doi.org/10.3390/ma16093483.

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In a “smart” corrosion-protective coating system, both the active anti-corrosion and the early corrosion detection of underlying metals are highly required. It is practical significant to develop materials that possess self-detecting of the early local corrosion and self-healing of coating defects simultaneously. The organic compound 8-hydroxyquinoline (8HQ) is an effective inhibitor and a fluorescent sensor probe for corrosion of aluminum alloy. Therefore, a layer double hydroxide (LDH) nanocontainer film loaded with the 8HQ was developed for the active corrosion protection purpose of aluminum alloy AA2024. In corrosive environments, the 8HQ are released from LDH film to inhibit the corrosion process, leading to the loss of the complexation with Al3+ ions in LDH laminates, thus turning off fluorescence. Results show that the LDH film loaded with 8HQ composites can improve the anti-corrosion performance of the film by releasing corrosion inhibitors on demand. Simultaneously, due to the complexation of 8HQ and Al3+ ions, the LDH film is fluorescent at the initial stage under ultraviolet light, and then becomes non-fluorescent at the corrosion sites, indicating the corrosion evolution process of the coating. The 8HQ-loaded LDH film with self-healing and self-detecting dual functions provides promising opportunities for the effective corrosion protection of aluminum alloy due to its “smart” and multifunctional properties.

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Skuridin, N. N., A. S. Tyusenkov, and D. E. Bugai. "Cathodic protection of main oil pipeline." Journal of Physics: Conference Series 2373, no. 8 (December 1, 2022): 082015. http://dx.doi.org/10.1088/1742-6596/2373/8/082015.

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Abstract Corrosion damage to metal is one of the main factors that reduce the safety of operation of main pipelines. It is known that about 70 % of pipeline failures occur due to metal corrosion. Electrochemical protection in combination with non-metallic coatings is currently the main method to prevent aggressive effects of corrosive media on main pipelines. The use of these methods of protecting pipelines has a number of difficulties that can be associated with the use of several protective coatings of different types and conditions on one oil pipeline; use of cathodic stations of different design and efficiency; Lack of a system to monitor electrochemical protection objects; difficulties arising during operation of anode grounding electrodes and comparison electrodes. Under these conditions, bringing the technical condition of the anti-corrosion protection system of the main oil pipelines to the level corresponding to the modern requirement of industrial safety is an important task that allows improving the safety and reliability of pipeline transport facilities. The article provides an analysis of the operation of cathodic protection units of the Kaltasy-Yazykovo main oil pipeline and the results of calculations on optimizing the modes of the cathode stations.

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Selvam Kevin, Panneer, Abhishek Tiwari, Saravanan Seman, Syed Ali Beer Mohamed, and Rengaswamy Jayaganthan. "Erosion-Corrosion Protection Due to Cr3C2-NiCr Cermet Coating on Stainless Steel." Coatings 10, no. 11 (October 28, 2020): 1042. http://dx.doi.org/10.3390/coatings10111042.

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Cr3C2–NiCr coatings have been used extensively to combat the erosion corrosion of hydro power turbine blades made of stainless steel. Cr3C2–NiCr coatings are also used in aqueous corrosive environments due to the high corrosion resistance rendered by the NiCr binder. In this investigation, both erosion and corrosion environments are introduced to cermet coating to study corrosion behavior using potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) techniques. The cermet coatings are useful for reducing the risk of deterioration of mechanical properties of hydro power turbines due to the continuous exposure to the erosive and corrosive action of the corrosive environment containing silt. It was observed that Cr3C2–NiCr coating offered a reasonable improvement in corrosion resistance when compared to bare substrate. The corrosion behavior of the coating was studied in a 150 mL solution of 0.1 M NaCl with 2 gms of quartz particles (0.2–0.8 mm) at various rotation speeds (3000, 4500, 6000 rpm) of the solution over a 1 h immersion using potentiodynamic polarization and EIS studies in a specifically designed experimental set-up for erosion corrosion. When compared to the bare stainless steel samples at 3000 rpm and 6000 rpm, the coating showed the highest improvement at 6.57 times and the least improvement at 3.79 times, respectively.

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Emelyanenko, Kirill A., Alexandre M. Emelyanenko, and Ludmila B. Boinovich. "Laser Obtained Superhydrophobic State for Stainless Steel Corrosion Protection, a Review." Coatings 13, no. 1 (January 15, 2023): 194. http://dx.doi.org/10.3390/coatings13010194.

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Stainless steel has become an integral part of modern engineering materials and daily life due to its mechanical efficiency, strength, recyclability, high resistance to oxidation and corrosive attack, which make it the ideal material for many kinds of applications. At the same time, steel suffers from certain types of corrosion, such as intergranular corrosion, or contact corrosion that develops when stainless steel comes into contact with carbon steel or another metal with a different electrochemical potential. Finally, pitting corrosion is a serious problem often occurring when stainless steel parts work in sea water. This paper provides a brief overview of methods for protecting stainless steel from corrosion using a new approach based on superhydrophobization of the surface of stainless steel using laser processing followed by the deposition of a layer of a substance with a low surface energy. The review discusses the mechanisms of corrosion protection by such coatings and the properties of superhydrophobic coatings presented in the literature. Superhydrophobic protective coatings on stainless steel have been shown to significantly reduce corrosion, with some demonstrating a decrease in corrosion current of up to 156 times. However, a more comprehensive analysis of the mechanisms contributing to this effect, as well as a comparison with anti-corrosion coatings on other metals, suggests that the combination of these mechanisms has the potential to create even more durable and effective surfaces for corrosion protection of stainless steel.

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Goncharova, Olga A., Andrey Yu Luchkin, Nickolay N. Andreev, Oleg Yu Grafov, Olga S. Makarova, Ilya A. Kuznetsov, and Sergey S. Vesely. "Chamber Protection of Zinc with Ethylhexanoic Acid." Materials 16, no. 10 (May 11, 2023): 3679. http://dx.doi.org/10.3390/ma16103679.

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Chamber protection is a promising and quickly developing method of vapor-phase protection of metals against atmospheric corrosion by inhibitors. It was shown that chamber treatment with 2-ethylhexanoic acid (EHA) efficiently inhibits the initiation of zinc corrosion. The optimum conditions (temperature and duration) of zinc treatment with vapors of this compound were determined. If these conditions are met, adsorption films of EHA with thicknesses up to 100 nm are formed on the metal surface. It was found that their protective properties increase during the first day as zinc is exposed to air after chamber treatment. The anticorrosive action of adsorption films is due both to the surface being shielded from the corrosive environment and to the inhibition of corrosion processes on the active surface of the metal. Corrosion inhibition was caused by the ability of EHA to convert zinc to the passive state and inhibit its local anionic depassivation.

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Parsa, Mansoureh, Seyed Mohammad Ali Hosseini, Zahra Hassani, and Effat Jamalizadeh. "Corrosion protective properties of coatings doped with inhibitors." Anti-Corrosion Methods and Materials 61, no. 6 (October 28, 2014): 416–22. http://dx.doi.org/10.1108/acmm-07-2013-1281.

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Purpose – The purpose of this paper was to study the corrosion resistance of water-based sol-gel coatings containing titania nanoparticles doped with organic inhibitors for corrosion protection of AA2024 alloy. Design/methodology/approach – The coatings were obtained using tetraethylorthosilicate, 3-glycidoxypropyltrimethoxysilane, titanium (IV) tetrapropoxide and poly(ethylene imine) polymer as cross-linking agents. As corrosions inhibitors, 2-mercaptobenzoxazole and salicylaldoxime were incorporated into the sol-gel for the improvement of the corrosion resistance. The corrosion protection performance of coatings was studied using the potentiodynamic scan and the electrochemical impedance spectroscopy (EIS) methods. Atomic force microscopy was used to investigate surface morphology of the coatings. Findings – The results indicated that doping the sol-gel coatings with inhibitors leads to improvement of the corrosion protection. The comparison of doped coatings confirmed that corrosion protection performance of the sol-gel coatings doped with 2-mercaptobenzoxazole was better than for the sol-gel coatings doped with salicylaldoxime. Also the EIS results verified self-healing effects for the sol-gel coatings doped with 2-mercaptobenzoxazole. Originality/value – This paper indicates 2-mercaptobenzoxazole and salicylaldoxime can be added as corrosion inhibitors to sol-gel coatings to improve their corrosion protective properties for AA2024 alloy.

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Mioč, Ekatarina Kristan, and Helena Otmačić Ćurković. "Corrosion Protection by Octadecylphosphonic Acid in Flow Conditions." Chemical & biochemical engineering quarterly 33, no. 3 (2019): 395–403. http://dx.doi.org/10.15255/cabeq.2018.1572.

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The aim of this work was to examine the influence of the flow rate of corrosive media on the stability of self-assembled films of octadecylphosphonic acid on copper-nickel alloy and stainless steel. The studies were conducted in river and seawater in a laboratory scale flow system. Corrosion behaviour of protected and unprotected alloys was examined by electrochemical techniques, electrochemical impedance spectroscopy, and polarization measurements. The results show that octadecylphosphonic acid films can efficiently protect copper-nickel and stainless steel from corrosion in flowing natural waters. The flow of corrosive media had the highest influence on the stability of films on CuNi in seawater, while in all other studied cases, the protective properties of ODPA film changed insignificantly with the change of the flow rate.

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Zapevalov, Dmitry, and Ruslan Vagapov. "Possibilities and limitations of the organization of anticorrosion protection at gas production facilities." E3S Web of Conferences 225 (2021): 03002. http://dx.doi.org/10.1051/e3sconf/202122503002.

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Products of several going and promising onshore and offshore hydrocarbon extraction sites both in Russia and foreign countries are known due to elevated level of corrosive СО2. The article analyzes present procedures aimed at rating corrosive hazard of extracted fluids, selection and implementation of measures for protection of equipment and pipelines against of inner corrosion. Onshore and offshore facilities work within specific environment, which affects arrangement of corrosion protection and corrosion monitoring systems. Presence of СО2 in the extracted products together with other factors stimulate intensive growth of corrosion, and require attentive and reasonable attitude to choose engineering solutions providing safe and reliable operation of production facilities.

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Yang, Huan, Shi Qiu, Yu Feng Lu, Zhen Xing Liu, and Fei Lu. "Experimental Study on Corrosion Prevention of a Multilayer Coating System." Advanced Materials Research 881-883 (January 2014): 1307–11. http://dx.doi.org/10.4028/www.scientific.net/amr.881-883.1307.

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Aiming to the corrosion prevention of 16MnR steel surface in the light aggregate concrete, the paper applies a kind of corrosion prevention system composed of layered coating. It utilizes measurement methods such as field emission scanning electron microscopy and energy disperse spectroscopy to study the corrosion and change process of this kind of coating system in the surface of 16MnR steel in the environment of light aggregate concrete and make the evaluation on its effect of corrosion protection. The experiment result indicates that due to its mechanical masking function, the layered coating system can effectively restrain immersion of the corrosive medium in early corrosion period so as to protect the metallic matrix. With the deepening of the corrosion, the nanometer Zn particle has the function of cathodic protection on the metallic matrix, effectively enhancing the comprehensive corrosion protection ability of the coating system.

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Pokhmurs'kyi, V., and N. Chervins'ka. "Corrosion problems and Corrosion protection of materials “Corrosion-98”." Materials Science 34, no. 3 (May 1998): 444–46. http://dx.doi.org/10.1007/bf02355640.

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Topilnitskij, Petro. "Corrosion protection of oil production and refinery equipment." Chemistry & Chemical Technology 1, no. 1 (March 15, 2007): 45–54. http://dx.doi.org/10.23939/chcht01.01.045.

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The review of methods of industrial equipment corrosion prevention is presented. Application of technological means using chemical reagents and surface-active substances is considered, namely dehydration and desalting of hydrocarbon products of deposits by surface-active substances – so called demulsifiers. Corrosion inhibitors and neutralizing agents for protection of condensation-refrigeration equipment and overheads of atmospheric columns are examined. The amount of reagents to be used and the process conditions were determined.

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Pinchuk, Sofiya, Galina Galchenko, Aleksey Simonov, Ludmila Masakovskaya, and Irina Roslyk. "Complex Corrosion Protection of Tubing in Gas Wells." Chemistry & Chemical Technology 12, no. 4 (December 10, 2018): 529–32. http://dx.doi.org/10.23939/chcht12.04.529.

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34

Pecenová, Z., and M. Kouřil. "Protection of historical lead against acetic acid vapour." Koroze a ochrana materialu 60, no. 1 (March 1, 2016): 28–34. http://dx.doi.org/10.1515/kom-2016-0002.

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Abstract Historical lead artefacts (small figurines, appliques, bull (metal seal) can be stored in depository and archives in inconvenient storage conditions. The wooden show-case or paper packagings release volatile organic compound to the air during their degradation. These acids, mainly acetic acid are very corrosive for lead. The thin layer of corrosion products which slows atmospheric corrosion is formed on lead surface in atmospheric condition. In presence of acetic acid vapour the voluminous corrosion products are formed and fall off the surface. These corrosion products do not have any protection ability. The lead could be protected against acid environment by layer of “metal soup” which is formed on surface after immersion in solution of salt of carboxylic acid for 24 hours. The solutions of acids (with vary long of carbon chain) and their salts are examined. Longer carbon chain provides better efficiency convers layer. The disadvantages are low solubility of carboxylic acids in water and bad abrasion resistance of formed layer.

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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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Mikić, Dajana, and Helena Otmačić Ćurković. "Protection of Patinated Bronze with Long-Chain Phosphonic Acid/Organic Coating Combined System." Materials 16, no. 4 (February 16, 2023): 1660. http://dx.doi.org/10.3390/ma16041660.

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Bronze cultural heritage in urban areas is susceptible to decay due to the significant amount of pollutants present in the air. This causes the dissolution of bronze and the patina on its surface. The efficient protection of outdoor bronze cultural heritage is still an unresolved problem. The aim of this work is to investigate 16-phosphonohexadecanoic acid as an environmentally friendly and non-toxic corrosion inhibitor for patinated bronze. The corrosion protection of sulphide-patinated bronze by phosphonic acid alone and in combination with acrylic coating Paraloid B-72 is examined. In order to achieve efficient corrosion protection, various parameters of the phosphonic acid application were studied. The efficiency of protection is examined by electrochemical impedance spectroscopy (EIS) during the immersion in simulated acid rain solution and after exposure to a corrosion chamber. It was found that the studied phosphonic acid provides corrosion protection to patinated bronze and significantly improves the protective properties of Paraloid B72. This was also confirmed by scanning electron microscopy (SEM) examination of the coating surface after exposure to a corrosive environment.

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Astashev, Sergey, and Oxana Medvedeva. "Applications of alternative energy for electrochemical corrosion protection devices on natural gas pipelines." Energy Safety and Energy Economy 4 (August 2021): 12–17. http://dx.doi.org/10.18635/2071-2219-2021-4-12-17.

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Natural gas pipeline corrosion has a high impact on economics. That is why efficiency of corrosion prevention and protection is one of crucial factors contributing to reliability and endurance of natural gas distribution pipelines. In this paper, the authors discuss a novel renewable energy-based installation which is intended for power supply of electrochemical corrosion protection devices on natural gas pipelines. The mentioned installation is driven by a natural gas flow transforming its energy into electric power to be supplied to electrochemical corrosion protection devices protecting underground steel pipelines in the oil and gas industry

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Miyasaka, Matsuho. "Corrosion and Corrosion Protection of Seawater Pumps." Zairyo-to-Kankyo 61, no. 12 (2012): 464–70. http://dx.doi.org/10.3323/jcorr.61.464.

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Miyasaka, Matsuho. "Corrosion and Corrosion Protection of Marine Instruments." Proceedings of the 1992 Annual Meeting of JSME/MMD 2003 (2003): 705–8. http://dx.doi.org/10.1299/jsmezairiki.2003.0_705.

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Gibalenko, O. M., N. P. Chyzhenko, and G. О. Melnik. "THE DECREASE IN THE LEVEL OF CORROSION HAZARD IN THE RATIONAL DESIGN OF METAL STRUCTURES." Modern structures of metal and wood, no. 27 (July 2023): 52–58. http://dx.doi.org/10.31650/2707-3068-2023-27-52-58.

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Expansion of functional possibilities of the use of combined designs in the construction, improvement of architectural expressiveness of buildings and structures determine the need for improved requirements to ensure the quality and reliability of means and methods of corrosion protection. Currently, the development of computational methods to assess the reliability and structural safety associated with the construction of in-formation-analytical database key parameters of corrosion condition of metal construction. Methodology. This way creates the basis for setting and implementing management tasks operational life of buildings and structures in corrosive environments by improving the quality and reliability of primary and secondary protection of steel structures based on the level of corrosion hazard. Results. When using the principles of the process approach is the formulation and implementation of tasks of management of operational service life in corrosive environments. The principles of ensuring safety in terms of corrosion risk include the rationale for the sequence of steps to evaluate the survivability of building structures based on the principles of robust design, improvement and control measures the primary and secondary corrosion protection. Scientific novelty. The implementation of protection measures against corrosion according to the corrosion risk criterion helps to ensure the requirements of reliability of building structures in accordance with the design provisions of limit state method and to solve the problems of control of technological security for the rated life of construction projects. objects. Practical significance. The proposed generalized indicators of the actual structures’ corrosion state determine the structure’s operability as a whole. The functional dependencies between the operability of the main and auxiliary structures are established. The relationship between the values of corrosion resistance indicators and metal structures durability are determined. Actual technical condition control consists of checking that the values of these indicators are within acceptable limits. Taking into account the degree of operating environment aggressiveness is one of the determining factors in order to ensure the secondary protection effectiveness against corrosion. This procedure is the basis for the rational specifications appointment for anti-corrosion protection systems with subsequent display in the design and technological documentation

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41

Orlikowski, Juliusz, Kazimierz Darowicki, Agata Jazdzewska, and Magdalena Jarzynka. "The protection and monitoring of a distribution piping network for potable water supply." Anti-Corrosion Methods and Materials 62, no. 6 (November 2, 2015): 400–406. http://dx.doi.org/10.1108/acmm-04-2014-1367.

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Purpose – The purpose of this paper is to implement the corrosion protection method for steel pipes used in a municipal water-pipe network. Results of an inhibitor protection system installed on the system are presented. Inhibitor protection was required due to the high corrosivity of the water collected by a surface intake, which had resulted in a large number of failures and low water quality, due to the presence of corrosion products. Design/methodology/approach – To assess the effectiveness of protection and to control the optimum dose of the inhibitor dispensed, an automatic system of corrosion monitoring was used, together with an assessment of water corrosiveness based on measurements of physical and chemical properties of water. Findings – Calcium polyphosphate, in the role of a non-toxic corrosion inhibitor, showed significant effectiveness as a anticorrosive and its results were fully noticeable after several years following the commencement of protection. Corrosion monitoring has shown that the effectiveness of inhibitor protection is highest in the summer season, when the water is characterised as being in its most corrosive form. Originality/value – A reduction in the corrosion rate improves the quality of water and its chemical parameters fall within the standard range for water intended for consumption. The corrosion inhibitor action accelerates the formation of a layer limiting the corrosion rate. In this case, stable corrosion rates may be obtained after only the first year. In terms of the designing systems for monitoring corrosion in water systems, this is very important information as reliable results can be obtained for a long period after the launch of the system.

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Wang, Ping, Zhao Hui Yin, Han Tao Ren, Song Xu, and Dong Wei Ma. "Review of Copper Atmospheric Corrosion in H₂S." Applied Mechanics and Materials 548-549 (April 2014): 177–81. http://dx.doi.org/10.4028/www.scientific.net/amm.548-549.177.

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The losses due to copper corrosion in H2S atmospheric corrosion have attracted much focus. It’s important to improve copper corrosion resistance that the corrosion law, corrosion mechanism and characteristics were studied in H2S environment. This paper reviewed the corrosion behavior of copper, analyzed the impact of environment factors and corrosion analysis tools. Through evaluating and improving corrosion by external factors, including improving corrosive environment, using coating protection and adding corrosion inhibitors, appropriate corrosion measures were taken to extend the life of the equipment.

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Lansley, Brian. "Galvanizing — economical corrosion protection." Anti-Corrosion Methods and Materials 34, no. 11 (November 1987): 10–16. http://dx.doi.org/10.1108/eb020600.

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Kaczinski, Mark. "Corrosion Protection of Cables." IABSE Symposium Report 84, no. 2 (January 1, 2001): 71–77. http://dx.doi.org/10.2749/222137801796350815.

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Lobnig, Renate. "6. Corrosion Protection Symposium." Materials and Corrosion 68, no. 12 (December 2017): 1284. http://dx.doi.org/10.1002/maco.201770126.

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Walsh, F., G. Ottewill, and D. Barker. "Corrosion and Protection of Metals: II. Types of Corrosion and Protection Methods." Transactions of the IMF 71, no. 3 (January 1993): 117–20. http://dx.doi.org/10.1080/00202967.1993.11871002.

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47

Alonso, Maria Cruz, Miguel Prieto, Monika Pilz, Amaia Gomez, and Frederico Maia. "Self-protection concrete measures as prevention measure from chloride transport and corrosion of reinforcement." MATEC Web of Conferences 378 (2023): 07003. http://dx.doi.org/10.1051/matecconf/202337807003.

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Incorporation of additives into a reinforced concrete matrix to delay or even completely avoid the initiation of corrosion during the service-life of the construction is a widely pursued topic. One of the new promising technologies achieving increased interest is to incorporate corrosion inhibitors encapsulated in layered double hydroxide (LDH). LDH structures follow a controlled release of the inhibitor while chloride is efficiently trapped at the same time. Another type of nanostructure additive offering self-protection ability in concrete is polyhedral oligomeric silsesquioxanes (POSS) developed to exhibit water-repellent functionalities protecting the reinforcement from corrosive attack. In the present laboratory work, the enhanced performance of concrete infrastructures in a marine environment was studied using a SCC design. The addition of LDH (0.5, 1 and 2 % by mass of binder (bmb)) and POSS (2 and 4 % additive level) was explored. Migration and diffusion Cl transport tests have been performed towards corrosion protection of reinforcing bars. The results showed that Cl transport decreases with the concrete maturity, and this is even more effective for concretes with LDH and POSS. This delay effect is more pronounced in the unidirectional diffusional Cl transport. LDH is significantly retarding the initiation of rebar corrosion.

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Zhao, Xia, Shuan Liu, and Bao Rong Hou. "A Comparative Study of Neat Epoxy Coating and NanoZrO₂/Epoxy Coating for Corrosion Protection on Carbon Steel." Applied Mechanics and Materials 599-601 (August 2014): 3–6. http://dx.doi.org/10.4028/www.scientific.net/amm.599-601.3.

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nanoZrO2 was modified by styrene coupling grafting method and then used as an additive to improve the protective performance of epoxy coating. Two kinds of coatings, neat epoxy coating and nanoZrO2/epoxy coating, were prepared and applied on Q235 carbon steel plates. The plates were submitted to salt spray chamber and seawater immersion for 1000 hours to evaluate the corrosion protection performance for these two kinds of coatings. Tafel polarization curves and electrochemical impedance spectroscopy (EIS) were determined to analyze the corrosion behavior of coating/metal system. Scanning electron microscopy (SEM) and photographs were carried out for morphology analysis of two kinds of coatings under different conditions. Results showed a superior stability and efficient corrosion protection by nanoZrO2 /epoxy coating. The modified nanoZrO2 could inhibit the penetration of corrosive media and then improve the corrosion protection of the epoxy coating on carbon steel.

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Hanák, Miroslav, Jitka Podjuklová, René Siostrzonek, Daniela Pavelková, and Lenka Koldová. "The Influence of Substrate Surface Cleanliness on the Corrosion Resistance of Coating Systems." Materials Science Forum 818 (May 2015): 167–70. http://dx.doi.org/10.4028/www.scientific.net/msf.818.167.

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Water-based coating systems are becoming increasingly popular among consumers due to their simple application and a wide range of colours. A common mistake made by users of these coating systems is neglecting of diagnostics of the corrosive environment and failing to eliminate the factors that cause corrosion aggressiveness. On the boundary of two different environments there can be corrosion products developed and dust particles deposited, which may cause, under certain circumstances, development of deeply hidden corrosion, and thus reduce the level of protection of the substrate. In order to provide long-term protection of the substrate the coating system must be able to eliminate the corrosion agents effectively. In addition to the requirements for aesthetic value set by the consumers, also environmental aspects must be taken into account in the long-term protection of the substrate.

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Knyazeva, Z. V., D. I. Andriyanov, P. E. Yudin, and R. A. Vasin. "RESEARCH OF WEAR RESISTANCE AND MECHANISM OF ABRASIVE WEAR OF GAS THERMAL METALLIZED COATINGS USED FOR SEM PROTECTION." Petroleum Engineering 21, no. 5 (November 9, 2023): 168–81. http://dx.doi.org/10.17122/ngdelo-2023-5-168-181.

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Complicated operating conditions of oilfield equipment during oil production using ESPs require the use of additional measures to protect its main components from the effects of negative factors. One of the main and significant negative factors influencing the corrosive aggressiveness of the environment is the water cut of the produced oil, which contains a large amount of dissolved gases, such as carbon dioxide and hydrogen sulfide, which are characterized by high corrosive aggressiveness and are the main risk factors leading to corrosion of the oil field. equipment and their premature failure. The housings of submersible electric motors (SEM) are the most susceptible to corrosion of the ESP unit. According to statistics, about 70% of failures occur in the motor housing. Of the variety of protection methods, the application of gas-thermal metallization coatings is the most widely used for protecting motor housings. Despite the effectiveness of this method of protection, it does not exclude the occurrence of corrosion processes in the metal of the motor housing and possible damage and destruction. This article is devoted to studies of the corrosion behavior of various types of metallization coatings used to protect SEDs under the influence of one of the main aggressive components — carbon dioxide dissolved in the mineralized aqueous phase, by conducting autoclave tests that simulate in laboratory conditions the operation of the material, in particular its corrosion resistance when exposed to a corrosive environment.Conducting research in this area is an urgent task aimed at solving the problems of reducing the service life of oilfield equipment and their premature failure, in particular motor drive housings during operation in difficult conditions.

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Journal articles on the topic 'Corrosion protection'

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