Inhibitive action of the purine and adenine for copper corrosion in sulphate solutions

被引：64
|
作者：
Scendo, M. [1 ]
机构：
[1] St Cross Acad Kielce, Inst Chem, PL-25020 Kielce, Poland
来源：
CORROSION SCIENCE | 2007年 / 49卷 / 07期
关键词：
adenine; copper; inhibition; purine; sulphate solution;
D O I：
10.1016/j.corsci.2007.01.002
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The influence of the concentration of the purine (PU) and adenine (AD) on the corrosion of copper in 0.5 M Na2SO4 solutions (pH 6.8) was studied. The investigations involved electrochemical polarization methods as well as electrochemical quartz crystal microbalance (EQCM) techniques. The inhibition efficiency increases with an increase in the concentration of PU and AD. Adherent layers of inhibitors were postulated to account for the protective effect. The adsorptions of inhibitors were found to occur on the surface of copper according to the Langmuir isotherm. The values of standard free energies of adsorption suggest the chemical adsorption of PU and AD on the copper surface. (C) 2007 Elsevier Ltd. All rights reserved.
引用
收藏
页码：2985 / 3000
页数：16
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