Electrochemical behaviour of Alloy 600 tubing in thiosulphate solution

被引：46
作者：
Faichuk, M. G. [1 ]
Ramamurthy, S.
Lau, W. M. [1 ]
机构：
[1] Univ Western Ontario, Dept Chem, London, ON, Canada
来源：
CORROSION SCIENCE | 2011年 / 53卷 / 04期
关键词：
Alloy; XPS; AES; EIS; Passive film; Stress corrosion; STRESS-CORROSION CRACKING; POINT-DEFECT MODEL; RAY PHOTOELECTRON-SPECTROSCOPY; HIGH-TEMPERATURE WATER; ANODIC PASSIVE FILMS; NICKEL-BASE ALLOYS; NI-CR ALLOYS; IMPEDANCE SPECTROSCOPY; OXIDE-FILMS; SENSITIZED ALLOY-600;
D O I：
10.1016/j.corsci.2011.01.011
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Electrochemical and surface properties of passive films formed on Alloy 600 in a thiosulphate solution were studied. Oxide films formed at various passive potentials contained a bilayer oxide, whose composition changed as a function of the applied potential resulting in a change in the impedance behaviour. Destabilisation of the oxide film at potentials within the passive region was observed, which was due to the breakdown of the oxide film and coincided with the loss of Cr within the passive film. In contrast, a higher degree of corrosion protection was obtained when the Cr content within the oxide film was elevated. (c) 2011 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1383 / 1393
页数：11
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