Some amino acids as corrosion inhibitors for copper in nitric acid solution

被引：167
|
作者：
Barouni, K. [2 ]
Bazzi, L. [2 ]
Salghi, R. [3 ]
Mihit, M. [2 ]
Hammouti, B. [1 ]
Albourine, A. [2 ]
El Issami, S. [2 ]
机构：
[1] Fac Sci, LCAE, Oujda 60000, Morocco
[2] Fac Sci, LME, Agadir 80000, Morocco
[3] ENSA, LIPEE, Agadir 80000, Morocco
来源：
MATERIALS LETTERS | 2008年 / 62卷 / 19期
关键词：
corrosion; inhibition; copper; amino acids;
D O I：
10.1016/j.matlet.2008.02.068
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The inhibition effect of five amino acids (AA) on the corrosion of copper in molar nitric solution was studied by using weight loss and electrochemical polarization measurements. Valine (Val) and Glycine (Gly) accelerate the corrosion process; but Arginine (Arg), Lysine (Lys) and Cysteine (Cys) inhibit the corrosion phenomenon. Cysteine is the best inhibitor. Its efficiency increases with the concentration to attain 61% at 10(-3) M. Correlation between the quantum chemical calculations and inhibition efficiency was discussed using semiempirical methods (AM1 and MNDO). (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码：3325 / 3327
页数：3
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