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Journal articles on the topic 'Tafel extrapolation'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Esteves, Luiza, Mônica M. A. M. Schvartzman, Wagner Reis da Costa Campos, and Vanessa F. C. Lins. "Corrosion Behavior of Duplex Stainless Steel in Industrial White Liquor." Corrosion 74, no. 5 (2017): 543–50. http://dx.doi.org/10.5006/2558.

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Specimens of lean duplex and duplex stainless steel were exposed at 200°C in industrial white liquor from a Brazilian kraft mill using an autoclave to simulate the same conditions of digester processing. Tafel extrapolation method and weight loss were used to evaluate corrosion behavior of duplex steel in white liquor. The higher alloy steel, although presenting a lower corrosion rate than the lean duplex, presents a more severe selective attack on ferrite, at 200°C and 1.8 MPa, after Tafel extrapolation method in industrial white liquor.

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2

McCafferty, E. "Validation of corrosion rates measured by the Tafel extrapolation method." Corrosion Science 47, no. 12 (2005): 3202–15. http://dx.doi.org/10.1016/j.corsci.2005.05.046.

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3

Poorqasemi, E., O. Abootalebi, M. Peikari, and F. Haqdar. "Investigating accuracy of the Tafel extrapolation method in HCl solutions." Corrosion Science 51, no. 5 (2009): 1043–54. http://dx.doi.org/10.1016/j.corsci.2009.03.001.

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4

Sharma, Sangita, Kinnari H. Parikh, Mahesh V. Kadia, Falguni D. Thakkar, and Dhara D. Patel. "Polarization Studies on Inhibitory Effect of Chromates and Dichromates on Corrosion of Tin Coated Steel in 0.5M Monochloroacetic Acid." E-Journal of Chemistry 5, no. 2 (2008): 302–8. http://dx.doi.org/10.1155/2008/658706.

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Chromates and Dichromates have been tested for its inhibitory effects towards tin coated steel in 0.5M monochloroacetic acid. The corrosion behaviour of potassium chromate, sodium chromate, potassium dichromate, sodium dichromate and ammonium dichromate was studied by polarization curves, Tafel parameters like Tafel slopes, extrapolation of cathodic Tafel line and intersection of cathodic and anodic line at open circuit potential in presence of inhibitors have been tabulated along with other electrochemical parameters and corrosion current have been calculated from Tafel lines. The efficiencie

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5

Shi, Zhiming, Ming Liu, and Andrej Atrens. "Measurement of the corrosion rate of magnesium alloys using Tafel extrapolation." Corrosion Science 52, no. 2 (2010): 579–88. http://dx.doi.org/10.1016/j.corsci.2009.10.016.

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6

Rybalka, K. V., L. A. Beketaeva, and A. D. Davydov. "Estimation of Corrosion Rate of AISI 1016 Steel by the Analysis of Polarization Curves and Using the Method of Measuring Ohmic Resistance." Russian Journal of Electrochemistry 57, no. 1 (2021): 16–21. http://dx.doi.org/10.1134/s1023193521010092.

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Abstract By the example of the study of AISI 1016 steel corrosion in the HCl solution, the potentialities of various methods for determining the corrosion currents are studied. The corrosion rate of steel without polarization is determined using the method of measuring ohmic resistance of test specimen. It is shown that the iterative method used for the analysis of potentiodynamic curves in the vicinity of corrosion potential avoids the complications that arise when the Tafel extrapolation method is used in the absence of pronounced Tafel sections in these curves.

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7

Amin, M. A., O. A. Hazzazi, F. Kandemirli, and M. Saracoglu. "Inhibition Performance and Adsorptive Behavior of Three Amino Acids on Cold-Rolled Steel in 1.0 M HCl—Chemical, Electrochemical, and Morphological Studies." Corrosion 68, no. 8 (2012): 688–98. http://dx.doi.org/10.5006/0506.

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Three selected amino acids, namely, serine (Ser), threonine (Thr), and glutamine (Glu), were tested as corrosion inhibitors for cold-rolled steel (CRS) in 1.0 M hydrochloric acid (HCl) solutions at different temperatures (283 K to 333 K). Chemical (weight loss) and electrochemical (Tafel polarization) methods were used in this study. Electrochemical frequency modulation (EFM), a non-destructive corrosion measurement technique that can directly give values of corrosion current without prior knowledge of Tafel constants, was also used. Experimental corrosion rates determined by the Tafel extrapo

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8

Bakhtiari, Amirreza. "The relationship between surface treatments and corrosion resistance of hot-dip galvanized steel." Metallurgical and Materials Engineering 20, no. 3 (2014): 165–70. http://dx.doi.org/10.5937/metmateng1403165b.

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In this work three surface treatments such as: polishing, sand-blast and polishedoxidized have been carried out on the hot-dip galvanized coatings. The roughness and corrosion resistance of coatings have been studied. Surface morphology of coatings has evaluated by scanning electron microscope (SEM). Corrosion behavior was analyzed by salt spray cabinet test and Tafel extrapolation test. The results showed that the sample under sand-blasted treatment exhibited the highest roughness number. Tafel polarization and salt spray cabinet tests reveal the sample with great roughness number have weak c

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9

Poorqasemi, Eqbal, Fatemeh Haqdar, and Omid Abootalebi. "A Study on the Accuracy of the Tafel Extrapolation Method in HCl." ECS Transactions 19, no. 29 (2019): 191–203. http://dx.doi.org/10.1149/1.3259809.

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10

Xu, Yang, Yong Zou, and Tao Luan. "Application of Electrochemical Techniques in the Porosity Assessment of Electroless Coatings." Advanced Materials Research 557-559 (July 2012): 1848–51. http://dx.doi.org/10.4028/www.scientific.net/amr.557-559.1848.

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Chemical and electrochemical techniques were applied to evaluate the porosity of various electroless coatings (single-layer coating, multilayer coating and ternary coating). The electrochemical techniques include linear polarization resistance and Tafel extrapolation method. The effects of these techniques were compared. It’s evident that electrochemical methods performed better than chemical method when they were applied to assess the porosities of coatings with very fine through pores.

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11

Guo, Xiao Fei, Bin Xu, and Yue Wang. "The Application of Parstat 2273 Electrochemical Workstation in Corrosion Experiment." Advanced Materials Research 690-693 (May 2013): 3474–77. http://dx.doi.org/10.4028/www.scientific.net/amr.690-693.3474.

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The electrochemical workstation has important role in the electrochemical research. In this paper, the Parstat 2273 workstation was introduced and the main applications in electrochemistry were explained. The Tafel extrapolation was introduced as example to illustrate how to test the corrosion velocity by electrochemical workstation, and the EIS was used to analysis corrosion resistance of different materials. In the actual researching process, Parstat 2273 workstation should develop its further application more effectively.

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12

Maleque, Md Abdul, B. A. Ghazal, Mohammad Yeakub Ali, M. Hayyan, and A. A. Saleh. "Corrosion of Surface Modified AISI 4340 Steel in Jatropha Biodiesel." Advanced Materials Research 1115 (July 2015): 243–46. http://dx.doi.org/10.4028/www.scientific.net/amr.1115.243.

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The aim of this paper is to study the effect of jatropha curcas biodiesel on the corrosion behavior of surface modified low alloy steel after modification by TIG torch surface melting technique. The coating layer was produced by preplacement of 1 mg/mm2 TiC particulate into the surface of AISI 4340 steel and at heat input of 1344 J/mm using an electric arc generated from the tungsten electrode that melt the powder with substrate material to form a composite layer. The micrograph of the composite coated surface modified steel showed formation of TiC dendrites that densely populated at the of th

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13

Salleh, Siti Hawa Mohamed, Mohd Nazree Derman, Mohd Zaidi Omar, and Rohaya Abdul Malek. "Different Concentration of Al(NO₃)₃ in ZrO₂/Al₂O₃ Double Layer Coating Steel Prepared by Electrolytic Method." Key Engineering Materials 594-595 (December 2013): 561–65. http://dx.doi.org/10.4028/www.scientific.net/kem.594-595.561.

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Stainless steels, such as 440C steel are commonly used for engineering applications. The high carbon contents of this steel have significantly been attributed to low corrosion resistance properties. Surface modification such as electrolytic double layer coating with ZrO2/Al2O3 was carried out to control the performance. Samples were deposited in ZrO(NO3)2 and Al (NO3)3 aqueous solution respectively. Potentiodynamic examination (Tafel Extrapolation test) was conducted to measure the corrosion resistance of coated steel. The results showed improvements in hardness properties and corrosion rate a

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14

Samide, Adriana, Ion Bibicu, Mircea Preda, Olimpia Rusu, and Paul Chirita. "INVESTIGATION OF CARBON STEEL CORROSION IN DILUTED AMMONIACAL MEDIA." SOUTHERN BRAZILIAN JOURNAL OF CHEMISTRY 15, no. 15 (2007): 59–69. http://dx.doi.org/10.48141/sbjchem.v15.n15.2007.62_revistadec2007partial.pdf.

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Electrochemical measurements (steady-state current-voltage curves) were coupled with Mossbauer spectroscopy techniques to investigate the corrosion of carbon steel in diluted ammoniacal media. The corrosion current for carbon steel in diluted ammoniacal media was determined from galvanostatic measurements, through extrapolation of the Tafel segments at the corrosion potential. Mossbauer measurements were performed at room temperature in the transmission (TMS) and conversion electron spectroscopy (CEMS) using a conventional constant-accelerating spectrometer with a 57Co-Rh source. The result of

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15

Mahecha-Gómez, Andrey Felipe, Claudia Patricia Mejía-Villagrán, and Jhon Jairo Olaya-Flórez. "Aplicación de una metodología mixta para la selección de materiales resistentes a la corrosión en medios ácidos y salinos." Respuestas 20, no. 1 (2015): 112. http://dx.doi.org/10.22463/0122820x.265.

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Objetivo: En este artículo se presenta una metodología mixta de selección de materiales para determinar qué material presenta la mejor relación entre resistencia a la corrosión, propiedades mecánicas y costos. Metodología: El trabajo se llevó a cabo utilizando pruebas potenciodinámicas de extrapolación (Tafel) e impedancia electroquímica (EIS), sometiendo las muestras a medios corrosivos de NaCl (3%) y H2SO4 (5%). Las muestras utilizadas fueron el cerámico Zirconia no sinterizada y los aceros AISI 304L, AISI 316 y AISI 316L. Finalmente se aplicó una metodología de selección de materiales para

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16

Kanemitsu, Toshinori, Satoshi Takaya, Satoru Yamamoto, Kenshiro Takeko, and Takashi Yamamoto. "Corrosion Progress Evaluation of a Rebar in Concrete by the Corrosion Monitoring Using the Tafel Extrapolation." Zairyo-to-Kankyo 67, no. 7 (2018): 298–303. http://dx.doi.org/10.3323/jcorr.67.298.

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17

GUERRERO-PENALVA, R., M. H. FARIAS, and L. COTA-ARAIZA. "CORROSION STUDY OF A Zn–22Al–2Cu ALLOY WITH THE SURFACE MODIFIED BY AN Y2O3 THIN FILM." Surface Review and Letters 09, no. 05n06 (2002): 1697–701. http://dx.doi.org/10.1142/s0218625x02004244.

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Samples of Zn–22Al–2Cu (zinalco) alloys with and without a thin film of Y 2 O 3 were submitted to corrosion by potentiodynamic polarization and analyzed by means of Tafel extrapolation. In addition, in-depth profiles by Ar ion sputtering and Auger electron spectroscopy were obtained. Samples with Y 2 O 3-deposited film and subjected to potentiodynamic polarization present an improvement in corrosion resistance up to 75% in pH = 4.5 aerated water as compared to samples without the Y 2 O 3 deposit. The variations in electrochemical parameters are explained by the spectroscopic in-depth profile m

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18

Rosliza, R., W. B. Wan Nik, and Sudin Izman. "Efficiency Comparison of some Natural Products on Corrosion Inhibition of Al-Mg-Si Alloy." Advanced Materials Research 328-330 (September 2011): 1206–9. http://dx.doi.org/10.4028/www.scientific.net/amr.328-330.1206.

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The comparison of the efficiency of some natural products (natural honey, vanillin and tapioca starch) on corrosion inhibition of Al-Mg-Si alloy is investigated in seawater solution at room temperature, using potentiodynamic polarization (PP), linear polarization resistance (LPR), and electrochemical impedance spectroscopy (EIS) measurements. The evolution of the corrosion potential (Ecorr) and corrosion current density (icorr) obtained from Tafel extrapolation of polarization curves, and the polarization resistance (Rp) values determined from LPR and EIS measurements indicate that the corrosi

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19

Kajanek, Daniel, Branislav Hadzima, and Filip Pastorek. "Electrochemical Characterization of Az31 Magnesium Alloy Treated by Ultrasonic Impact Peening (Uip)." Communications - Scientific letters of the University of Zilina 20, no. 3 (2018): 24–29. http://dx.doi.org/10.26552/com.c.2018.3.24-29.

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Electrochemical characteristics of AZ31 magnesium alloy after impacting by ultrasonic impact peening (UIP) were measured in order to evaluate its effect on corrosion resistance of mentioned alloy. For this purpose, potentio-dynamic polarization (PD) tests and electrochemical impedance spectroscopy (EIS) of ground and impacted samples were performed in 0.1 M NaCl solution at the temperature of 22±2 °C after 5 minutes of potential stabilization. The obtained PD curves were analysed using the Tafel extrapolation method and data from EIS measurements in form of Nyquist plots were quantified by the

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20

Jano, Albana, Alketa Lame, and Efrosini Kokalari. "Test of inhibitors for preventing corrosion of steel reinforcement in concrete." Ovidius University Annals of Chemistry 32, no. 2 (2021): 110–13. http://dx.doi.org/10.2478/auoc-2021-0016.

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Abstract Concrete is more widely used than any other manmade material. The objective of this paper is to investigate the behavior of reinforced cement when migration corrosion and guar gum inhibitors are used. The concrete samples were exposed in aggressive media H2SO4 1 M and in the presence of 1∙10-3 M Cl-. Electrochemical measurements such as half-cell potential, polarization resistance and Tafel extrapolation methods were performed in order to obtain information on the corrosion behavior of the reinforcing steel in cement mortar. Results demonstrate high resistance polarization and low cor

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21

Miyamoto, Hiroyuki, Takura Mimaki, Alexei Vinogradov, and Satoshi Hashimoto. "Intergranular Corrosion of Ultrafine Grain Copper Fabricated by ECAP." Materials Science Forum 561-565 (October 2007): 2385–88. http://dx.doi.org/10.4028/www.scientific.net/msf.561-565.2385.

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Corrosion of ultra-fine grain (UFG) copper fabricated by equal-channel angular pressing (ECAP) has been investigated in comparison with that of recrystallized coarse grain (CG) copper. Corrosion current was estimated by a Tafel extrapolation method to examine the kinetics of corrosion in a modified Livingstone etchant, which attack dislocations and grain boundaries preferentially. UFG copper have exhibited a lower corrosion current in comparison with that in its recrystallized coarse grain (CG) counterpart despite the fact that the dislocation density and total fraction of grain boundaries are

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22

dos Santos, Givanildo Alves, Alexandre Neves Ribeiro, Mauricio Silva Nascimento, et al. "Influence of the Thermal Parameters on the Microstructure, Corrosion Resistance and Hardness on the Unidirectional Solidification of Al-10wt% Si-5wt% Cu Alloy." Materials Science Forum 1012 (October 2020): 308–13. http://dx.doi.org/10.4028/www.scientific.net/msf.1012.308.

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This study aims to correlate thermal parameters in the directional solidification of Al-10wt% Si-5wt% Cu alloy with the resulting microstructure and, in addition, with hardness and corrosion resistance. The results include primary dendritic arm spacing (PDAS), tip growth rate (VL), cooling rate (TR), scanning electron micrographs (SEM), hardness values and corrosion resistance parameters obtained by electrochemical impedance spectroscopy (EIS) and by the Tafel extrapolation method, conducted in 3% (m/v) NaCl solution at room temperature. The results show that coarser PDAS exhibit a tendency to

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23

Sridhar, N., and K. Udaya Bhat. "Effect of Deposition Time on the Morphological Features and Corrosion Resistance of Electroless Ni-High P Coatings on Aluminium." Journal of Materials 2013 (May 8, 2013): 1–7. http://dx.doi.org/10.1155/2013/985763.

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High phosphorus Ni-P alloy was deposited on aluminium substrate using electroless deposition route. Using zincating bath, the surface was activated before deposition. Deposition time was varied from 15 minutes to 3 hours. Deposit was characterised using scanning electron microscope with energy dispersive spectroscope, X-ray diffraction, and microhardness tester. The corrosion resistance was measured using Tafel extrapolation route. The medium was aqueous 5% HNO3 solution. The analysis showed that the deposit consisted of nodules of submicron and micron scale. The predominant phase in the depos

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24

Ismeal, Mustafa K., Kharia S. Hassan, and Hussian A. Hussian. "Corrosion Behavior of Nanocomposite Al-9 wt% Si Alloy Reinforced with Carbon Nanotubes." Al-Khwarizmi Engineering Journal 13, no. 1 (2017): 66–73. http://dx.doi.org/10.22153/kej.2017.08.006.

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An effort is made to study the effect of composite nanocoating using aluminum-9%wt silicon alloys reinforced with different percentage (0.5,1,2,4)wt.% of carbon nanotubes (CNTs) using plasma spraying. The effect of this composite on corrosion behavior for AA6061-T6 by extrapolation Tafel test in sea water 3.5wt% NaCl was invested. Many specimens where prepared from AA6061-T6 by the dimension (15x15x3)mm as this first set up and other steps include coating process, X-ray diffraction and SEM examination .The results show the CNTs increase the corrosion rate of the nanocomposite coatings with inc

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25

Ivašková, Martina, Martin Lovíšek, Peter Jančovič, and Lenka Bukovinová. "Influence of Temperature on the Electrochemical Characteristics of Ti-6Al-4V." Materials Science Forum 811 (December 2014): 77–82. http://dx.doi.org/10.4028/www.scientific.net/msf.811.77.

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Titanium is not only the most widely used biomaterial for medical implants, but with its very good mechanical properties, corrosion resistance and low density is also applicated in many sectors of industry (aerospace, military, aviation, machinery, energetics, chemicals, etc.). In this paper it is described the influence of temperature on the electrochemical characteristics of Ti-6Al-4V alloy. The surface was mechanically grinded and polished by chemical-mechanical process. Basic electrochemical characteristics were determined by potentiodynamic tests in 0.1M NaCl solution at different tempera

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26

Satpati, A. K., and A. V. R. Reddy. "Electrochemical Study on Corrosion Inhibition of Copper in Hydrochloric Acid Medium and the Rotating Ring-Disc Voltammetry for Studying the Dissolution." International Journal of Electrochemistry 2011 (2011): 1–8. http://dx.doi.org/10.4061/2011/173462.

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Dissolution characteristics of copper in hydrochloric acid medium and the effect of 4-amino 1,2,4-triazole (ATA) on the corrosion process have been studied using conventional electrochemical techniques and rotating ring-disc electrodes (RRDEs). Corrosion potential () and corrosion current density () were obtained by Tafel extrapolation methods. Charge transfer resistance () and double-layer capacitance () were obtained from the electrochemical impedance spectroscopy (EIS). ATA was shown to be an effective inhibitor for the copper-corrosion inhibition in acid medium. The corrosion rate was reta

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27

Yu, Hui Cheng, Fu Hou Lei, Guang Hui Deng, and Xue Cai Tan. "Investigation of Anticorrosive Trivalent-Chrome Coatings on 6063 Aluminum Alloy." Advanced Materials Research 396-398 (November 2011): 1764–68. http://dx.doi.org/10.4028/www.scientific.net/amr.396-398.1764.

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In this work, Chromium (Cr(III)) conversion coatings on Al 6063 alloy was prepared using trivalent-chrome compound (KCr(SO4)2) and H3PO4. The influence of five variables (i.e. deposition temperature, time, bath pH, and concentrations of (Cr(III)) compound (KCr(SO4)2) and H3PO4) on the preparation of (Cr(III)) coating on Al 6063 alloy was investigated using polarization curve in 3.5 wt% NaCl solution. The parameters of polarization curves were obtained from the extrapolation of anodic and cathodic Tafel lines. The optimum chemical passivation parameters of the chromium (Cr((III)) conversion coa

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28

Ivašková, Martina, Martin Lovíšek, and Katarína Miková. "Electrochemical Characteristics of Anodized Ti-6Al-4V Alloy." Materials Science Forum 818 (May 2015): 149–52. http://dx.doi.org/10.4028/www.scientific.net/msf.818.149.

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Titanium and its alloys are still popular in different kind of industry. Ti-6Al-4V alloy is usually used due to its two-phased composition, which cause good mechanical properties. Corrosion resistance of this material can be improved by anodic oxidation. This electrochemical method is used to increase the thickness of titanium dioxide. The aim of the research was color anodizing of the Ti-6Al-4V alloy in the 7% H2SO4 acid solution at 20 ± 0.5°C and for 30 seconds at different voltages (15-90V). The electrochemical characteristics were determined by potentiodynamic tests in the 0.1M NaCl soluti

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29

Drazic, Dragutin, and Jovan Popic. "Dissolution of chromium in sulfuric acid." Journal of the Serbian Chemical Society 67, no. 11 (2002): 777–82. http://dx.doi.org/10.2298/jsc0211777d.

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By combining electrochemical corrosion rate measurements and spectrophotometric analysis of the electrolyte it was shown that at room temperature chromium dissolves in deaerated 0.1M Na2SO4 + H2SO4 (pH1) solution as Cr(II) and Cr(III) ions in he ratio Cr(II):Cr(III)?7:1. This process was stable over 4h without any detectable change. The total corrosion rate of chromium calculated from the analytical data is about 12 times higher, than that determined electrochemically by cathodic Tafel line extrapolation to the corrosion potential. This finding was confirmed by applying the weight-loss method

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30

Jagdeo, Kailash R. "Electrochemical corrosion response of ZrN coated Nickel-Titanium alloy in 0.9% NaCl solution." International Journal for Research in Applied Science and Engineering Technology 9, no. 8 (2021): 2547–52. http://dx.doi.org/10.22214/ijraset.2021.37803.

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Abstract: The biomedical application as metallic body implants of Nickel-Titanium shape memory alloys are of high interest due to its unique property of pseudo elasticity. However, high content of nickel and its potential to release from the surface due to corrosion raises safety concerns about its allergic reactions, toxicity and carcinogenicity. Hence, it is necessary to produce proper passivity to prevent surface layer degradation. In this study, ZrN coating on Nickel-Titanium shape memory alloys was obtained by vacuum cathodic arc physical vapor deposition technique to improve electrochemi

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Shaldaev, V. S., A. N. Malofeeva, and A. D. Davydov. "Determination of corrosion rate of molybdenum, rhenium and their alloys in sodium chloride solution by the method of Tafel extrapolation." Russian Journal of Electrochemistry 50, no. 10 (2014): 994–98. http://dx.doi.org/10.1134/s1023193514100097.

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Azam, Mohd Asyadi, Mohd Fuad Ibrahim, and Muhammad Zaimi. "Corrosion Analysis of Carbon Steel Pipeline: Effect of Different Sulfuric Acid Concentrations." Applied Mechanics and Materials 699 (November 2014): 215–20. http://dx.doi.org/10.4028/www.scientific.net/amm.699.215.

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Oil and gas industry has been hugely contributing any government income and this industry is highly required to control corrosion failures in pipelines which may potentially cause substantial human and economic losses. The objective of this study is to study the effect of sulfuric acid (H2SO4) electrolyte concentration to corrosion behavior of the internal surface of natural gas pipeline by using Tafel extrapolation method. Surface morphology of the samples is studied using optical microscope and scanning electron microscope to investigate the correlation between the corrosion rate and surface

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33

Ishibashi, Y., M. Nose, M. Hatakeyama, and S. Sunada. "Effects Of Aluminum Sputtering On The Corrosion Resistance Of AZ91 Alloy." Archives of Metallurgy and Materials 60, no. 2 (2015): 953–55. http://dx.doi.org/10.1515/amm-2015-0237.

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Abstract The corrosion resistance of a Magnesium alloy is low and needs to be improved. This research aimed at corrosion-resistance improvement by supatterd deposition aluminium film, which is formed on the surface of AZ91 Magnesium-alloy. Corrosion resistance performed polarization curve measurement, was evaluated in quest of the corrosion rate using the Tafel extrapolation method, and conducted surface observation and EDS analysis by SEM. Although corrosion resistance is not improved only by film forming because of defects in film, corrosion resistance is improved by heat treatment for 3 hou

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34

Haitham M. Wadullah, Asst Prof Dr, Prof Dr Sami Abualnoun Ajeel, Prof Dr Muna Khethier Abbass, Eng Mohammed Younus Hussein, and . "Corrosion of Platinum Nanocoatings Thin Films Deposited by Sputtering Deposition Method for Medical Applications." International Journal of Engineering & Technology 7, no. 4.37 (2018): 63. http://dx.doi.org/10.14419/ijet.v7i4.37.23618.

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Platinum (Pt.) thin films have been deposited by Magnetron Sputtering Deposition method with 25 nm and 50 nm thickness by used power RF for deposited 5 nm Titanium (Ti) firstly then used DC for deposited Platinum (Pt) on Ni-Cr alloy substrate. SEM/EDX and Ellipsometry Spectroscopy have been used to investigate the morphology, element analysis, nanothickness and roughness of the thin films respectively. Electrochemical corrosion tests have been used to analyze the localized corrosion resistance by used cyclic polarization, Tafel extrapolation and open circuit potential (o.c.p) methods on artifi

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Amin, Mohammed A., K. F. Khaled, and Sahar A. Fadl-Allah. "Testing validity of the Tafel extrapolation method for monitoring corrosion of cold rolled steel in HCl solutions – Experimental and theoretical studies." Corrosion Science 52, no. 1 (2010): 140–51. http://dx.doi.org/10.1016/j.corsci.2009.08.055.

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36

Wang, Qing Juan, Y. C. Wang, Zhong Ze Du, and Xiao Yan Liu. "Investigation on Corrosion Behaviors of Ultra-Fine Grain Copper in 3.5% NaCl Solution." Materials Science Forum 667-669 (December 2010): 1125–30. http://dx.doi.org/10.4028/www.scientific.net/msf.667-669.1125.

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The corrosion behavior of ultra-fine grain (UFG) copper bulk prepared by equal channel angular pressing (ECAP) was studied in 3.5% NaCl solution. The effect of ECAP deformation on the copper corrosion is controversial in the literature, and worth to verify by means of various experimental techniques. Corrosion performances of UFG copper were investigated in comparison with that in recrystallized coarse grain (CG) copper by polarization curves, Tafel extrapolation method, electrochemical impedance spectroscopy(EIS). The shape of polarization curves and type of corrosive attack remains the same

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37

Adeniyi, Ayodele Samuel, and Mary Ajimegoh Awotunde. "Corrosion Susceptibility of a 0.35%C Steel in Seawater Electrolyte Using the Electrochemical Method." International Journal of Engineering Research in Africa 27 (December 2016): 20–26. http://dx.doi.org/10.4028/www.scientific.net/jera.27.20.

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The Tafel extrapolation and linear polarization methods were used as effective measures for determining the corrosion susceptibility of a spheroidized 0.35%C steel with sea water as the electrolyte. Eight pieces of steel were machined to length 5mm by 10mm in diameter. Two pieces each were heat treated at 600°C, 700°C and 800°C respectively and two pieces left as control. Electro-chemical experiments were carried out to obtain the best potential and anodic current of samples immersed in an electrolyte (seawater) at varying anodic potential of-0.7mv, -0.6mv, -0.5mv and-0.4mv respectively. The r

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Kadam, Suresh N., Kailash R. Jagdeo, and M. R. Nair. "Improvement in Surface Properties of Ti6Al4V Alloy by ZrN Thin Film." International Letters of Chemistry, Physics and Astronomy 45 (January 2015): 59–65. http://dx.doi.org/10.18052/www.scipress.com/ilcpa.45.59.

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Ti6Al4V alloy is attracting attention as a biomaterial due to its excellent mechanical properties, corrosion resistance and super plasticity. However; this alloy contains aluminium and vanadium liable to do serious harm to human bodies. For overcoming surface originated problems, various surface modification techniques have been used on metallic implants. In this study cathodic arc PVD was used to produce ZrN coating with different substrate bias voltage at 20mttor nitrogen gas pressure. Corrosion resistance of Ti6Al4V and ZrN coated Ti6Al4V were investigated by an electrochemical test, at 37°

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Salazar Peralta, Araceli, Rosa Hilda Chavez, Oscarf Olea Mejía, and Dora Alicia Solís-Casados. "Study of the Corrosion Rate of Three Contactors Materials Using the Electrochemical Technique of Tafel." Advanced Materials Research 356-360 (October 2011): 1195–201. http://dx.doi.org/10.4028/www.scientific.net/amr.356-360.1195.

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The main objective of this project was to study the corrosion rate of three different structured packing materials, a metallic, one polymeric and the other one ceramic, which will be in contact with an aqueous solution of MEA (monoethanolamine) to 30% and sour gases in a countercurrent absorption column. The materials were studied in two electrochemical cells: the first one in the presence of an aqueous solution of 1N sulfuric acid, and the second in the aqueous solution of MEA 30%, the study was done using the Tafel extrapolation methods and resistance to the polarization to measure the corro

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Behera, Akhya Kumar, and Archana Mallik. "An Investigation on Anti-Corrosion Properties of Electroplated Copper-Graphene Nano-Composite Films." Materials Science Forum 978 (February 2020): 499–504. http://dx.doi.org/10.4028/www.scientific.net/msf.978.499.

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In this report, graphene sheets used as reinforcements for improvement of anti-corrosion properties have been synthesized by electrochemical intercalation and exfoliation process. The (001) and (002) plane of graphene sheets at a 2θ angle of 13.2 and 26.13 confirmed by X-ray diffraction pattern. High-resolution TEM confirms 8-12 layers of graphene present in the final products. The as-received graphene sheets have been used as reinforcement with copper matrix to synthesize Cu-Gr nanocomposite by electrodeposition method. The results and investigations of Cu-Gr composite thin films deposited fr

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Fabre, Stéphanie, Céline Cabet, Laurent Cassayre, et al. "Electrochemical Study of the Corrosion of Metals in Molten Fluorides." Materials Science Forum 595-598 (September 2008): 483–90. http://dx.doi.org/10.4028/www.scientific.net/msf.595-598.483.

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Resistance to corrosion of the structural materials is a key factor for nuclear applications that use molten fluorides. Low chromium, nickel-base alloys are regarded as the most suitable metallic materials. In a first approach, corrosion of some pure metallic constituents Ni, Mo, W and Fe, was studied by electrochemical techniques. Linear voltammetry was applied in LiF-NaF and LiF-AlF3, in the temperature range 900-1100°C. The relative stability of the metals in LiF-NaF is established. To determine the corrosion current density, three methods are presented, two based on the Tafel extrapolation

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Hocine, Tassi, Zidelmel Sami, and Allaoui Omar. "Effect of Martensite Morphologies on Corrosion in 5% H2SO4 Solution of Borided X70 Dual Phase Steel." Annales de Chimie - Science des Matériaux 45, no. 1 (2021): 69–74. http://dx.doi.org/10.18280/acsm.450109.

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In the present investigation, some electrochemical properties of dual phase X70 steels with different martensite morphologies which have undergone boriding were studied. To obtain a variety of martensite morphologies, Direct Quenching (DQ), Intermediate Quenching (IQ) and Step Quenching (SQ) heat treatments were applied at an intercritical annealing temperature (IAT) of 760℃. The treatment (DQ) allowed the formation of fine martensite evenly distributed in the ferrite matrix. (IQ) treatment showed the formation of martensite along the ferrite / ferrite grain boundaries. In contrast, treatment

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Masallb, Hassan H., Kadhim F. Al-Sultani, and Abdul Raheem K. Abid Ali. "Improving Surface Properties of Inconel 600 Alloy by Electroless Ni-P Deposition." Al-Qadisiyah Journal for Engineering Sciences 12, no. 4 (2019): 254–59. http://dx.doi.org/10.30772/qjes.v12i4.642.

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The use of electroless Ni-P plating (EN) coating has attracted a surprising interest in the most recent years. Many useful characteristics of the electroless-plating method have created many benefits in different industries such as oil, gas, electronic, automotive, aerospace, and chemical. Some of the highlighted properties of such a method are superior corrosion resistance, superior mechanical properties, and uniform thickness of the coating as well as good surface finish properties, good adhesion characteristics, and a wide range of thickness. In this paper, electroless plating has been appl

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Yamamoto, Satoru, Eisaku Kojima, Masaru Abe, and Kenichi Tashiro. "An Evaluation of Applicability of a Measuring Method Using the Tafel Extrapolation Method（CIPE Method） to Corrosion Rate of Steel in Neutral Aqueous Solution." Zairyo-to-Kankyo 67, no. 12 (2018): 502–6. http://dx.doi.org/10.3323/jcorr.67.502.

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Kazanski, Barbara, Alex Lugovskoy, Ohad Gaon, and Michael Zinigrad. "Comparison of Electrochemical and Chemical Corrosion Behavior of MRI 230D Magnesium Alloy with and without Plasma Electrolytic Oxidation Treatment." Defect and Diffusion Forum 364 (June 2015): 27–34. http://dx.doi.org/10.4028/www.scientific.net/ddf.364.27.

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Magnesium is one of the lightest metals and magnesium alloys have quite special properties, interest to which is continuously growing. In particular, their high strength-to-weight ratio makes magnesium alloys attractive for various applications, such as transportation, aerospace industryetc. However, magnesium alloys are still not as popular as aluminum alloys, and a major issue is their corrosion behavior.The present research investigated the influence of the PEO treatment on the corrosion behavior of MRI 230M magnesium alloy. Plasma electrolytic oxidation (PEO) of an MRI 230M alloy was accom

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Balares, Kathleen Louise, Joniel Nuevo, Meliton Chiong, Reygie Macasieb, Augustus Resurreccion, and Christian Orozco. "Estimating Energy Consumption and Cost for the Electrocoagulation of Arsenic-laden Water (ECAR) Using Iron Electrodes." E3S Web of Conferences 148 (2020): 01004. http://dx.doi.org/10.1051/e3sconf/202014801004.

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In some areas in Pampanga, arsenic concentration from handpumps reaches up to 300 μg/L, 10 times higher than the safe limit for drinking water. An efficient way of reducing elevated arsenic concentration is through electrocoagulation (EC) process with the use of iron electrodes. However due to several factors, the efficiency of the technique is decreased. This study focuses on determining the energy consumption and cost through time. The cost per cycle was estimated through the power consumption and projecting its growth with time. One 600 L cycle costs around $0.60 to $1.10 which is approxima

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Kadam, Suresh N., Kailash R. Jagdeo, and M. R. Nair. "Characterization of Nitrogen Implanted Pure Ti in Normal Saline (0.9% NaCl) Solution." International Letters of Chemistry, Physics and Astronomy 43 (January 2015): 34–40. http://dx.doi.org/10.18052/www.scipress.com/ilcpa.43.34.

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Metallic biomaterial like stainless steel, Co-based alloy, Ti and its alloy are widely used as artificial hip joints, bone plates and dental implants. However; this alloy releases ions from the surface liable to do serious harm to human bodies. For overcoming surface originated problems, various surface modification technique have been used on the metallic implants. In this study, the nitrogen was implanted by a process of ion implantation at 60 keV with different fluences of 1 x 1016, 5 x 1016, 1x1017 and 5 x 1017 ions/cm2. Corrosion resistance of Ti and ion implanted Ti were investigated by

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Athirah Dzolin, Syaidah, Hadariah Bahron, Yusirie Mohd, Nor Zakiah Nor Hashim, and Nurul Huda Abdul Halim. "Retardation of Mild Steel Corrosion in Analogous Schiff Bases with Different Electronic Environments." International Journal of Engineering & Technology 7, no. 3.11 (2018): 20. http://dx.doi.org/10.14419/ijet.v7i3.11.15922.

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Two Schiff bases namely (E)-2-((phenylimino)methyl) phenol (SA1) and (E)-2-methoxy-6-((phenylimino)methyl) phenol (SA2) were produced via reaction of phenylamine with 2-hydroxybenzaldehyde and 2-hydroxy-3-methoxybenzaldenyde, respectively. The structures were elucidated through spectral and physicochemical techniques of melting point, elemental analysis (C, H and N), 1H Nuclear Magnetic Resonance (NMR) and Infrared (IR) spectroscopy. The distinctive n(C=N) and d(OH) peaks for SA1 and SA2 appeared at 1615 and 1613 cm-1 and at 13.27 and 13.37 ppm, respectively. Electrodeposit both compounds on m

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Khethier Abbass, Muna, and Bassma Finner Sultan. "EFFECT OF AL2O3 NANOPARTICLES ON CORROSION BEHAVIOR OF ALUIMNUM ALLOY (AL-4.5 WT% CU-1.5 WT% MG) FABRICATED BY POWDER METALLURGY." Engineering Structures and Technologies 11, no. 1 (2019): 25–31. http://dx.doi.org/10.3846/est.2019.8860.

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In this research the effect of Al2O3 nanoparticles on corrosion behavior of aluminum base alloy (Al-4.5 wt% Cu-1.5 wt% Mg) has been investigated. Nanocomopsites reinforced with variable contents of 1, 3 and 5 wt% of Al2O3 nanoparticles were fabricated using powder metallurgy. All samples were prepared from the base alloy powders under the best powder metallurgy processing conditions of 6 hr of mixing time, 450 MPa of compaction pressure and 560 °C of sintering temperature. Density and micro hardness measurements, and electrochemical corrosion tests are performed for all prepared samples in 3.5

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Sanabria-Martínez, Felipe, Ely Dannier Valbuena Niño, Leidy Silvana Chacón Velasco, and Hugo Armando Estupiñán Duran. "Electrochemical Behavior of a Stainless Steel Superficially Modified with Nitrogen by Three-dimensional Ion Implantation." Ingeniería e Investigación 42, no. 1 (2021): e85772. http://dx.doi.org/10.15446/ing.investig.v42n1.85772.

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Martensitic-grade stainless steels are widely used in diverse industrial and surgical applications, despite their natural tendency to suffer local and uniform corrosion when continuously exposed to aggressive operation conditions. In order to enhance their surface properties, this paper characterized the performance, in saline solutions, of AISI 420 stainless steel, which was surface-modified by three-dimensional ion implantation using electrochemical techniques. The surface of the samples was implanted with ionized nitrogen particles with an energy of 10 keV, varying the implantation time bet

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