Influence of molybdenum on the transpassivity of a Fe+12%Cr alloy in H2SO4 solutions

被引：25

作者：

Bojinov, M ^{[1
]}

Betova, I

Raicheff, R

机构：

[1] Bulgarian Acad Sci, Cent Lab Electrochem Power Sources, BU-1113 Sofia, Bulgaria

[2] Univ Chem Technol & Met, Dept Electrochem Engn & Corros Protect, BU-1756 Sofia, Bulgaria

来源：

JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 1997年 / 430卷 / 1-2期

关键词：

transpassive dissolution; secondary passivation; surface charge; iron + chromium alloy; kinetic model;

D O I：

10.1016/S0022-0728(97)00163-0

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The influence of Mo addition (5-10 wt.%) on the transpassive dissolution, secondary passivation and oxygen evolution on a Fe +12%Cr alloy in 1M H2SO4 is studied by voltammetric and AC impedance measurements within the frame of an investigation of the impact of Mo on the stability of the passive state of ferrous alloys in acidic media. A semi-quantitative model of the processes is proposed, based on the experimental results obtained and model approaches presented in the recent literature. It was found to be consistent with the experimental data and could serve as a first approximation to a generalized model of transpassivity. (C) 1997 Elsevier Science S.A.

引用

页码：169 / 178

页数：10

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