Copper transport and sulphide sequestration during copper corrosion in anaerobic aqueous sulphide solutions

被引：35

作者：

Chen, J. ^{[1
]}

Qin, Z. ^{[1
]}

Martino, T. ^{[1
]}

Guo, M. ^{[1
]}

Shoesmith, D. W. ^{[1
]}

机构：

[1] Univ Western Ontario, Dept Chem & Surface Sci Western, London, ON N6A 5B7, Canada

来源：

CORROSION SCIENCE | 2018年 / 131卷

关键词：

Copper; SEM; Interfaces; NUCLEAR-WASTE CONTAINERS; LONG-TERM CORROSION; POLLUTED SEAWATER; FILM GROWTH; SEA-WATER; ACCELERATED CORROSION; NICKEL-ALLOYS; BASE ALLOYS; MECHANISM; CHLORIDE;

D O I：

10.1016/j.corsci.2017.11.025

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The corrosion of copper in aqueous solutions containing >= 5 x 10(-4) mol/L sulphide and the ensuing accumulation of corrosion product deposits (as chalcocite Cu2S) occurs non-uniformly indicating the occurrence of microgalvanic coupling between net anodic and net cathodic surface locations. A series of novel electrochemical experiments were designed to confirm the occurrence of this process and a series of analytical procedures used to identify the chemical nature of the transported Cu species. Transport was found to occur as copper sulphide complexes and clusters. It was also demonstrated that all the available sulphide was sequestered as deposited Cu2S.

引用

页码：245 / 251

页数：7

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