PASSIVATION OF IRON AND ITS CATHODIC REDUCTION STUDIED WITH A ROTATING-RING-DISK ELECTRODE

被引：18
|
作者：
TSURU, T
FUJII, E
HARUYAMA, S
机构：
[1] TOSHIBA CO LTD,FUJI WORKS,FUJI,SHIZUOKA 416,JAPAN
[2] TOKYO NATL COLL TECHNOL,HACHIOJI 193,JAPAN
来源：
CORROSION SCIENCE | 1990年 / 31卷
关键词：
Cathodic reduction; Iron; Magnetite; Passive film; Ring-disk electrode; RRDE; γ-Fe[!sub]2[!/sub]O[!sub]3[!/sub;
D O I：
10.1016/0010-938X(90)90176-6
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Passivation of iron in various slightly acidic to neutral buffer solutions was studied with a rotating ring-disk electrode (RRDE). Ferrous ions was always detected at the ring electrode at the initial stage of potentiostatic passivation. Galvanostatic cathodic reduction in borate buffer solution of pH 8.39 revealed that two stages of reduction of the passive film occurred and ferrous ion yields during reduction were different from each other. The passivation potential and time dependence of the chemical composition of films were estimated and illustrated from the ferrous ion yields detected on the ring electrode. © 1990.
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页码：655 / 660
页数：6
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