Utilisation of Electrochemical Methods for Characterization of same Corrosion Inhibitors for Steel and Copper
Keywords:
molybdate, chromate, corrosion inhibitors, cooper, steel
Abstract
The effect of chromate and molybdate on the corrosion inhibition of copper and steel has been investigated in two eutectics solution at room temperature. We used stationary electrochemical methods and optical microscopy for the characterization of these materials. For steel, the molybdate inhibitor appears less efficient than the chromate one; for copper the polarization curves present an anodic passivation domain only in the chromate inhibited medium. The possibilities of galvanic coupling between them were simulated. This simulation has shown that, between copper and steel, the risk is more important in chromate medium than in molybdate one.
References
[1]. Zamfir, S., Vidu, R., Brinzoi, V. - Coroziunea materialelor metalice, ed. Didactica si pedagogica, R.A., Bucuresti, 1994.
[2]. Landolt, D. - Corrosion et chimie de surfaces des métaux, Presses Polytechniques et Universitaires Romandes, CH-Lausanne, ISBN 2-88074-245-5, 1993.
[3]. Liang, C., Guo, J., Hu, X. - Effects of Mo Composites on the Corrosion Behaviors of Low Alloys Steel, Journal of Wuhan University of Technology-Mater., Sci. Ed., vol. 22, no. 1, 2007.
[4]. Wang, J., Inhibitor effects on the anodic behaviour of iron electrodes, Chin. J. Oceanol. Limnol.,vol. 15, no. 2, 1997.
[5]. Scendo, M. - Inhibition of copper corrosion in sodium nitrate solutions with nontoxic inhibitors, Corrosion Science, no. 50, p. 1584-1592, 2008.
[6]. Hazzazi, O.A. - Corrosion inhibition studies of copper in highly concentrated NaCl solutions, J. Appl. Electrochem, no. 37, p. 933-940, 2007.
[7]. Maximovitch, S., Barbal, G., Le Cras, F., Claudet, F. - The electrochemical incorporation of molybdenum in the passive layer of a 17%Cr ferritic stainless steel. Its influence on film stability in sulphuric acid and on pitting corrosion in chloride media, Corrosion Science, vol. 37, no. 2, p. 271-291, 1995.
[2]. Landolt, D. - Corrosion et chimie de surfaces des métaux, Presses Polytechniques et Universitaires Romandes, CH-Lausanne, ISBN 2-88074-245-5, 1993.
[3]. Liang, C., Guo, J., Hu, X. - Effects of Mo Composites on the Corrosion Behaviors of Low Alloys Steel, Journal of Wuhan University of Technology-Mater., Sci. Ed., vol. 22, no. 1, 2007.
[4]. Wang, J., Inhibitor effects on the anodic behaviour of iron electrodes, Chin. J. Oceanol. Limnol.,vol. 15, no. 2, 1997.
[5]. Scendo, M. - Inhibition of copper corrosion in sodium nitrate solutions with nontoxic inhibitors, Corrosion Science, no. 50, p. 1584-1592, 2008.
[6]. Hazzazi, O.A. - Corrosion inhibition studies of copper in highly concentrated NaCl solutions, J. Appl. Electrochem, no. 37, p. 933-940, 2007.
[7]. Maximovitch, S., Barbal, G., Le Cras, F., Claudet, F. - The electrochemical incorporation of molybdenum in the passive layer of a 17%Cr ferritic stainless steel. Its influence on film stability in sulphuric acid and on pitting corrosion in chloride media, Corrosion Science, vol. 37, no. 2, p. 271-291, 1995.
Published
2009-05-15
How to Cite
1.
CONSTANTIN F, ABRUDEANU M, MILLET J-P. Utilisation of Electrochemical Methods for Characterization of same Corrosion Inhibitors for Steel and Copper. The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science [Internet]. 15May2009 [cited 28Apr.2024];32(1):91-4. Available from: https://www.gup.ugal.ro/ugaljournals/index.php/mms/article/view/3074
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