Copper corrosion in bentonite/saline groundwater solution: Effects of solution and bentonite chemistry

被引：59

作者：

Kosec, T. ^{[1
]}

Qin, Z. ^{[2
]}

Chen, J. ^{[2
]}

Legat, A. ^{[1
]}

Shoesmith, D. W. ^{[2
,3
]}

机构：

[1] Slovenian Natl Bldg & Civil Engn Inst, SI-1000 Ljubljana, Slovenia

[2] Univ Western Ontario, Dept Chem, London, ON N6A 5B7, Canada

[3] Univ Western Ontario, London, ON N6G 0J3, Canada

来源：

CORROSION SCIENCE | 2015年 / 90卷

关键词：

Copper; EIS; Raman spectroscopy; ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY; SITU RAMAN-SPECTROSCOPY; 3-PERCENT NACL; FILM FORMATION; SULFIDE; OXIDATION; CHLORIDE; BENZOTRIAZOLE; MECHANISMS; PRODUCTS;

D O I：

10.1016/j.corsci.2014.10.017

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Copper corrosion has been studied in simulated groundwater with and without added bentonite clay using different electrochemical techniques. The corroded surfaces were characterised by SEM/EDS, Raman spectroscopy and Auger depth profiling. In both environments small amounts of sulphide (0.005 mM) control the early corrosion behaviour. Under aerated conditions an initially formed Cu2S film is rapidly converted to a non-protective layer of cuprite and corrosion proceeds with the deposition of an outer layer of atacamite. In the presence of bentonite corrosion proceeds slowly under O-2 transport control. No atacamite is observed and the Cu surface appears slightly pitted. (C) 2014 Published by Elsevier Ltd.

引用

页码：248 / 258

页数：11

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