Inhibiting effect of 2-mercaptobenzimidazole on the corrosion of Cu-30Ni alloy in aerated 3% NaCl in presence of ammonia

被引：37

作者：

Benmessaoud, M.

Es-salah, K.

Hajjaji, N.

Takenouti, H.

Srhiri, A.

Ebentouhami, M.

机构：

[1] Fac Sci, Etudes Corros Environm, Lab Electrochim, Kenitra, Morocco

[2] Univ Paris 06, CNRS, UPR 15, Lab Phys Liquides & Electrochim, F-75252 Paris, France

来源：

CORROSION SCIENCE | 2007年 / 49卷 / 10期

关键词：

Cu-30Ni alloys; EIS; polarisation; SEM; passivity;

D O I：

10.1016/j.corsci.2007.03.017

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The inhibiting effect of 2-mercaptobenzimidazole (MBI) against Cu-30Ni alloy corrosion in aerated 3% NaCl polluted by ammonia, has been developed. Potentiodynamic and electrochemical impedance spectroscopy (EIS) measurements have been applied to determine the corrosion rate. scanning electron microscopy (SEM) studied surface morphology has been used to characterise electrode surface. The obtained results indicate that MBI acts as a good mixed-type inhibitor retarding the anodic and cathodic reactions. An increase of MBI concentration leads to a decrease of corrosion rate and inhibition efficiency increase. (c) 2007 Elsevier Ltd. All rights reserved.

引用

页码：3880 / 3888

页数：9

共 29 条

[1] The use of electrochemical impedance spectroscopy to study the effect of chlorine and ammonia residuals on the corrosion of copper-based and nickel-based alloys in seawater [J].