Intergranular corrosion of copper in the presence of benzotriazole

被引：52

作者：

Abdullah, AM ^{[1
]}

Al-Kharafi, FM ^{[1
]}

Ateya, BG ^{[1
]}

机构：

[1] Kuwait Univ, Fac Sci, Dept Chem, Safat 13060, Kuwait

来源：

SCRIPTA MATERIALIA | 2006年 / 54卷 / 09期

关键词：

copper; benzotriazole; intergranular corrosion; pitting; chloride;

D O I：

10.1016/j.scriptamat.2006.01.014

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

While benzotriazole (BTAH, C6H5N3) has long been known as an efficient inhibitor for the general corrosion of copper, this paper documents the occurrence of intergranular corrosion (IGC) of copper in a salt solution (3.5 wt.% NaCl) in the presence of I mM BTAH. This occurs above a breakdown potential, E-b, at the end of the passive region. Higher concentrations of BTAH broaden the passive region and shift E-b to more noble values. Pitting is the mode of corrosion above E-b in the presence of a higher concentration of BTAH, while IGC occurs above E-b in the presence of I mM of BTAH. (c) 2006 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

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页码：1673 / 1677

页数：5

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