Effects of hydrogen on the crevice corrosion behaviors of duplex stainless steel 2205

被引：15

作者：

He, Pei ^{[1
]}

Suo, Donghua ^{[1
]}

Wu, Wenbo ^{[1
]}

Yin, Liqiang ^{[1
]}

Dai, Wei ^{[1
]}

Shang, Binggang ^{[1
]}

Liu, Yuanyuan ^{[1
]}

Sun, Yangting ^{[1
]}

Jiang, Yiming ^{[1
]}

Li, Jin ^{[1
]}

机构：

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

来源：

JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T | 2022年 / 19卷

基金：

中国国家自然科学基金;

关键词：

Duplex stainless steel; Hydrogen; Crevice corrosion; Critical crevice corrosion conditions; ANODIC-DISSOLUTION; LOCALIZED CORROSION; PITTING CORROSION; PASSIVE FILM; TEMPERATURE; EVOLUTION; OXIDATION; STRESS; IRON; PH;

D O I：

10.1016/j.jmrt.2022.05.026

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Crevice corrosion behaviors of duplex stainless steel 2205 after hydrogen charging are investigated. The absorbed hydrogen is introduced into the specimens through cathodic galvanostatic method. It has been found the absorbed hydrogen decreases the critical crevice corrosion conditions (breakdown potential, temperature, and chloride ions content), the stable propagation potential, and the repassivation potential. The results reveal that hydrogen can promote the initiation and propagation stages and inhibit the repassivation process of crevice corrosion. Microstructure observation and element distribution analysis find that, owing to the promotion of hydrogen on the precipitation of insoluble molybdenum oxides and molybdate at the bottom of corrosion positions, crevice corrosion of the hydrogen charged specimens exhibits wider but shallower morphologies compared with the uncharged specimens. (c) 2022 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

引用

页码：101 / 120

页数：20

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