Study on the Electrochemical Corrosion Behavior of 304 Stainless Steel in Chloride Ion Solutions

被引：11
|
作者：
Zhang, Yu [1 ]
Yang, Changdi [1 ]
Zhao, Lin [2 ]
Zhang, Jiwen [1 ]
机构：
[1] Shenyang Univ, Sch Mech Engn, Shenyang 110044, Peoples R China
[2] Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
来源：
INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE | 2021年 / 16卷 / 02期
关键词：
304 stainless steel; passive film; concentration of Cl-; pitting corrosion; POINT-DEFECT MODEL; STAINLESS-STEEL; PITTING CORROSION; PASSIVE FILMS; BREAKDOWN;
D O I：
10.20964/2021.02.01
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
The corrosion behavior of 304 stainless steel under different concentrations of Cl- and specific Fe3+ was studied with different immersion times by open-circuit potential, AC impedance, and cyclic voltammetry curves. The results show that with an increase in the concentration of Cl- in the solution, the stability of 304 stainless steel with the passive film decreased. The potential time curve shows that in the initial stage, the incubation process of pitting can be described by exponential relationship. At the initial stage of immersion, the passive film of austenitic stainless steel hindered the corrosion of Cl- to some extent, but by prolonging the immersion time, Cl- destroyed the integrity of the passive film on the surface of austenitic stainless steel, and eventually led to apparent pitting corrosion.
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页码：1 / 12
页数：12
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