A PITTING MECHANISM FOR PASSIVE 304 STAINLESS-STEEL IN SULFURIC-ACID MEDIA CONTAINING CHLORIDE-IONS

被引：61

作者：

ZHANG, PQ

WU, JX

ZHANG, WQ

LU, XY

WANG, K

机构：

[1] University of Science and Technology, Beijing, Beijing

来源：

CORROSION SCIENCE | 1993年 / 34卷 / 08期

关键词：

D O I：

10.1016/0010-938X(93)90091-T

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The pitting behavior of passive 304 stainless steel in 0.25 M Na2SO4 media of pH 1 containing chloride ions of different concentrations has been investigated using EIS technique. The characteristics of measured impedance spectra have been analysed. It is proposed that an intermediate complex (MOHCl)com will form in both the pit initiation and propagation stages. The reaction mechanism models for pit initiation and propagation, and an equivalent circuit model to simulate the electrode impedance in pit propagation stage have been suggested. The factors which control the pit growth kinetics have been discussed.

引用

页码：1343 / &

共 20 条

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