文章基本信息

标题：Corrosion control of carbon steel in phosphoric acid by 6-methyl-7H-1,2,4-triazolo[4,3-b][1,2,4]-triazepine-8(9H)-thione: electrochemical studies
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作者：El Bakri Y. ; El Aoufir Y. ; Bourazmi H. 等
期刊名称：Journal of Materials and Environmental Science
印刷版ISSN：2028-2508
出版年度：2017
卷号：8
期号：8
页码：2657-2666
出版社：University of Mohammed Premier Oujda
摘要：The corrosion inhibition properties of 6-methyl-7H[1,2,4]triazolo[4,3-b][1,2,4] triazipine-8(9H)-thione (MTTT) on carbon steel in phosphoric acid (2M H3PO4) solution has been examined and characterized by Tafel polarization and electrochemical impedance spectroscopy (EIS) methods. The experimental results reveal that the compound has a good inhibiting effect onthe carbon steel in 2 M H3PO4 solution. The protection efficiency increases with increasing inhibitor concentration, but the temperature has hardly effect on the inhibition efficiency of MTTT. The adsorption of this compound is found to obey the Langmuir adsorption isotherm. Potentiodynamic polarization studies have shown that MTTT acts as a mixed type of inhibitor. Data obtained from EIS studies were analyzed to model inhibition process through appropriate equivalent circuit model(ECM).
关键词：carbonsteel; H3PO4; Corrosion inhibition; adsorption;MTTT; ECM; Electrochemical techniques;