Effect of temperature, chloride ion and pH on the crevice corrosion behavior of SAF 2205 duplex stainless steel in chloride solutions

被引：51

作者：

Han, D. ^{[1
]}

Jiang, Y. M. ^{[1
]}

Shi, C. ^{[1
]}

Deng, B. ^{[1
]}

Li, J. ^{[1
]}

机构：

[1] Fudan Univ, Dept Mat Sci, Shanghai 200433, Peoples R China

来源：

JOURNAL OF MATERIALS SCIENCE | 2012年 / 47卷 / 02期

基金：

上海市科技启明星计划; 中国国家自然科学基金;

关键词：

MECHANISM;

D O I：

10.1007/s10853-011-5889-6

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

An investigation was conducted to examine the crevice corrosion behaviors for SAF 2205 duplex stainless steel in NaCl solutions by using potentiostatic critical crevice temperature measurement. Potentiodynamic polarization technique was comparably used to study the electrochemical behavior. The influence of temperature, chloride concentration and pH on the critical crevice temperature and electrochemical behavior in NaCl solutions was studied. The critical crevice temperature of SAF 2205 DSS in 4% NaCl solution was about 28 A degrees C. The critical crevice temperature decreased linearly with an increase in log [Cl-]. A maximum critical crevice temperature was found in 4% NaCl solutions at pH 8.5. The influence of the duplex microstructure on attack development and morphology was analyzed by scanning electron microscope.

引用

页码：1018 / 1025

页数：8

共 26 条

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