Transpassivation-induced structural evolution of oxide film on 654SMO super austenitic stainless steel

被引：5

作者：

Wei, X. X. ^{[1
,2
]}

Zhang, B. ^{[1
]}

Xu, Y. T. ^{[3
,4
]}

Chen, Z. Y. ^{[1
]}

Li, X. L. ^{[3
,4
]}

Ma, X. L. ^{[1
,2
]}

机构：

[1] Songshan Lake Mat Lab, Bay Area Ctr Electron Microscopy, Dongguan 523808, Guangdong, Peoples R China

[2] Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China

[3] Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Wenhua Rd 72, Shenyang 110016, Peoples R China

[4] Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China

来源：

CORROSION SCIENCE | 2024年 / 232卷

基金：

中国国家自然科学基金;

关键词：

Passive film; Transpassivation; Aberration-corrected TEM; 654SMO super austenitic stainless steel; PITTING CORROSION; NANOSCALE MORPHOLOGY; PASSIVE FILMS; NITROGEN; BEHAVIOR; CR; MOLYBDENUM; ALLOYS; MO; RESISTANCE;

D O I：

10.1016/j.corsci.2024.112030

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Compared to the well-recognition of passivation, the events occurring during transpassivation is insufficiently understood. Here, by means of aberration-corrected transmission electron microscopy, we show that transpassivation induces the oxide film on the 654SMO super austenitic stainless steel thickening to 50-70 nm. Chromium oxide is dominant in the thickened film and distributes homogeneously along the in-depth direction. Metal nitrides is indicated to be formed in the thickened film by the evident incorporation of N with negative valence. This work shows a more possibilities to the film modification by transpassivation than the general consensus that chromium is oxidized to higher-valence soluble ions.

引用

页数：12

共 40 条

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