The Effect of Tungsten Inert Gas Welding on the Pitting Corrosion Behavior of 304 Stainless Steel

被引：2

作者：

Li, Qiushi ^{[1
,2
,3
,4
]}

Wang, Jihui ^{[2
]}

Wang, Ke ^{[2
]}

Wang, Huan ^{[2
]}

Hu, Wenbin ^{[2
]}

机构：

[1] Tianjin Port Engn Inst Co Ltd, CCCC First Harbor Engn Co Ltd, Tianjin 300222, Peoples R China

[2] Tianjin Univ, Sch Mat Sci & Engn, Tianjin Key Lab Composite & Funct Mat, Tianjin 300072, Peoples R China

[3] Tianjin Key Lab Underwater Tunnel Construct & Ope, Tianjin 300222, Peoples R China

[4] CCCC First Harbor Engn Co Ltd, Tianjin 300461, Peoples R China

来源：

INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE | 2020年 / 15卷 / 05期

基金：

中国国家自然科学基金;

关键词：

Stainless steel; Welding; Dynamic electrochemical impedance spectroscopy; Electrochemical noise; ELECTROCHEMICAL NOISE SIGNALS; DUPLEX STAINLESS-STEEL; DISSOLUTION PROCESS; MICROSTRUCTURE; ALLOY; EIS; PIT;

D O I：

10.20964/2020.05.40

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The effect of Tungsten Inert Gas Welding on the pitting corrosion behavior of 304 stainless steel (SS) in the 0.5 mol/L NaCl solution was investigated by potentiodynamic polarization, dynamic electrochemical impedance spectroscopy and electrochemical noise. The results indicated that the pitting resistance of the welded 304SS is weaker than that of the base 304SS. For the welded 304SS, metastable pit was observed with a slow generation and healing. For the base 304SS, metastable pit was also observed, but with a fast initiation and death. The related pitting mechanisms of both samples were also discussed.

引用

页码：3793 / 3806

页数：14

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