Effects of hydrogen charge on the intergranular corrosion of high-defect-density ultrapure ferrite stainless steel

被引：1
|
作者：
Shang, Binggang [1 ]
Yuan, Xinzhe [1 ]
Lan, Rulei [1 ]
Jiang, Yiming [1 ]
Li, Jin [1 ]
Sun, Yangting [1 ]
机构：
[1] Fudan Univ, Dept Mat Sci, Shanghai 200433, Peoples R China
来源：
CORROSION SCIENCE | 2023年 / 221卷
基金：
中国国家自然科学基金;
关键词：
Stainless steel; Intergranular corrosion; Hydrogen charge; Positron annihilation; Passive film; PASSIVE FILMS; CHEMICAL-COMPOSITION; CRACK INITIATION; STRESS; EMBRITTLEMENT; MECHANISM; CHROMIUM; SEMICONDUCTOR; PRECIPITATION; IMPURITIES;
D O I：
10.1016/j.corsci.2023.111360
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
This research scrutinizes the intricate effects of hydrogen charging on crystal defects and passive film properties in high-defect-density 443 ultrapure ferritic stainless steel. It discerns that with non-saturated hydrogen at hydrogen traps, escalated hydrogen charging current density results in increased hydrogen capture. These trapped atoms fill the defects, thus mitigating the stress level and fostering the growth of chromium oxides within the passive film. Consequently, the alloy's resistance to intergranular corrosion is enhanced.
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页数：12
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