Electrochemical behaviour of zirconium and the anodic oxide film in aqueous solutions containing chloride ions

被引：12
|
作者：
Mogoda, AS [1 ]
机构：
[1] Cairo Univ, Fac Sci, Dept Chem, Giza, Egypt
来源：
THIN SOLID FILMS | 1999年 / 357卷 / 02期
关键词：
zirconium; chloride ion; dissolution of ZrO2; impedance;
D O I：
10.1016/S0040-6090(99)00527-1
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The influence of chloride ions on the passivation of zirconium in phosphoric acid solution has been studied by open circuit potential and impedance measurements. The passivation is found to decrease with increasing chloride concentration. Dissolution of the anodic oxide film in H2SO4 containing different concentrations of chloride ions is also studied. It is found that there is a critical concentration (0.1 N) of chloride ions at which the average rate of dissolution of the oxide film has a maximum value. The oxide film formed in concentrated phosphate solution at pH 2 is the most stable oxide film in H2SO4 solution. (C) 1999 Elsevier Science S.A. All rights reserved.
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页码：202 / 207
页数：6
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