PASSIVITY AND PASSIVITY BREAKDOWN IN NICKEL ALUMINIDE

被引：13
|
作者：
BERTOCCI, U
FINK, JL
HALL, DE
MADSEN, PV
RICKER, RE
机构：
[1] National Institute of Standards and Technology Gaithersburg
来源：
CORROSION SCIENCE | 1990年 / 31卷
关键词：
Electrochemical measurements; nickel aluminide; passivity; pitting;
D O I：
10.1016/0010-938X(90)90148-X
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The electrochemical behavior of ductile nickel aluminide has been examined in alkaline, acidic and neutral solutions. Conditions for passive behavior, as well as for passivity breakdown, have been defined. The experimental results are compared with those obtained with the pure constituent metals, Ni and Al. Pitting has been observed not only in chloride-containing solutions, but in sulfuric acid in a certain potential range. This pitting is believed to be caused by a potential-dependent transition from the passive to the active state. The corrosion resistance of nickel aluminide appears to be similar to that of pure nickel. © 1990.
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页码：471 / 478
页数：8
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