Effect of chloride on Cu corrosion in anaerobic sulphide solutions

被引：27
作者：
Chen, J. [1 ,2 ]
Qin, Z. [1 ]
Martino, T. [1 ]
Shoesmith, D. W. [1 ,2 ]
机构：
[1] Univ Western Ontario, Dept Chem, London, ON, Canada
[2] Univ Western Ontario, Surface Sci Western, London, ON, Canada
来源：
CORROSION ENGINEERING SCIENCE AND TECHNOLOGY | 2017年 / 52卷
关键词：
Copper; sulphide; corrosion; film; nuclear waste disposal;
D O I：
10.1080/1478422X.2016.1271161
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The effect of chloride on copper corrosion in anaerobic aqueous sulphide solutions has been investigated using corrosion potential measurements, electrochemical impedance spectroscopy, scanning electron microscopy, focused ion beam and inductively coupled plasma atomic emission spectroscopy. Long-term exposure experiments were performed in 10(-3) mol L-1 Na2S solutions containing chloride concentrations in a range from 0.1 to 5 mol L-1. Chloride was found to (i) inhibit Cu2S film growth by displacing adsorbed sulphide from the Cu surface; (ii) induce film porosity; (iii) facilitate transport of Cu+ to the solution (at very high chloride concentrations).
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收藏
页码：40 / 44
页数：5
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