Статья
2021

Corrosion Behavior of Mild Steel in Presence of 2-Chloromethylbenzimidazole and Sodium Molybdate in 1 M HCl


 Weijie Guo Weijie Guo , Xuanxuan Zhao Xuanxuan Zhao , Deng Wang Deng Wang , Yancheng Li Yancheng Li , Liben Zhou Liben Zhou , Zhaolei Li Zhaolei Li , Yanmin Gao Yanmin Gao
Российский электрохимический журнал
https://doi.org/10.1134/S1023193521090032
Abstract / Full Text

Abstract—Corrosion behavior of mild steel in 1 mol/L HCl with 2-chloromethylbenzimidazole (2-CBI) and sodium molybdate (Na2MoO4) as inhibitor was studied by using electrochemical impedance spectroscopy and potentiodynamic scanning. 2-CBI was proved an effective inhibitor for mild steel in 1 mol/L HCl, while Na2MoO4 did not. With a fixed 2-CBI concentration (100 mg/L) and increasing of Na2MoO4 concentration (50 to 300 mg/L), the inhibition efficiency (IE) of the 2-CBI/Na2MoO4 complex increased first and then decreased, and the synergistic parameters of the complex were always higher than 1. When the concentration of Na2MoO4 approaches to 150 mg/L, the IE of the complex showed a maximum value as 89.0%, which was higher than that of only 100 mg/L 2-CBI as inhibitor (81.8%). This result is considered as a compelling support for understanding the mechanism of the synergistic inhibition.

Author information
  • School of Materials Science and Engineering, Jiangsu University of Science and Technology, National Demonstration Center for Experimental Materials Science and Engineering Education, 212003, Zhenjiang, China

    Weijie Guo, Xuanxuan Zhao, Deng Wang, Yancheng Li, Liben Zhou, Zhaolei Li & Yanmin Gao

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