SURFACE ENHANCED RAMAN-SCATTERING AND IMPEDANCE STUDIES ON THE INHIBITION OF COPPER CORROSION IN SULFATE-SOLUTIONS BY 5-SUBSTITUTED BENZOTRIAZOLES

被引：74
|
作者：
ARAMAKI, K
KIUCHI, T
SUMIYOSHI, T
NISHIHARA, H
机构：
[1] Department of Chemistry, Faculty of Science and Technology, Keio University, Yokohama
来源：
CORROSION SCIENCE | 1991年 / 32卷 / 5-6期
关键词：
D O I：
10.1016/0010-938X(91)90109-3
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The inhibition mechanisms of benzotriazole and its 5-methyl, 5-chloro and 5-nitro derivatives were investigated for copper corrosion in sulphate solutions at several values of pH by an impedance technique and surface enhanced Raman scattering spectroscopy. Protective films of cuprous complex polymers of the inhibitors were readily formed on the copper surface at high pH values and noble potential. The ease of complex formation was estimated to decrease in the order, 5-chlorobenzotriazole > benzotriazole congruent-to 5-methylbenzotriazole > 5-nitrobenzotriazole. The order agreed with that of the inhibition efficiencies in the neutral solution.
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页码：593 / 607
页数：15
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