An Ellipsometric Study of the Anodic Oxidation of Nickel in Neutral Electrolyte

被引:57
作者
Ord, J. L. [1 ]
Clayton, J. C. [1 ]
DeSmet, D. J. [1 ,2 ]
机构
[1] Univ Waterloo, Dept Phys, Waterloo, ON N2L 3G1, Canada
[2] Univ Alabama, Dept Phys, University, AL 35486 USA
关键词
anodic oxidation; ellipsometry; nickel;
D O I
10.1149/1.2133142
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
Ellipsometry is used to study alternate anodie and cathodic galvanostatic cycling of a nickel electrode in neutral sulfate and borate electrolyte. The removal of the electropolishing film under cathodic reduction, the anodic oxidation of the nickel substrate, and the deposition and conversion of films of Ni(OH)(2) and NiOOH can all be distinguished clearly on a plot of the optical data. The mechanism of anodic oxidation of the substrate is investigated using both optical and open-circuit transient measurements, and the field in the oxide film is concluded to limit the substrate oxidation process.
引用
收藏
页码:1714 / 1719
页数:7
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