Atomic scale in-situ TEM observation of the lattice strain enhanced-oxide film growth on stainless steel

被引:1
|
作者
Han, Chunyi [1 ,2 ]
Sun, Zhanbo [3 ]
Zhang, Qin [4 ]
Xin, Fanghai [4 ]
Liu, Zhaoyue [4 ]
Li, Mingtian [4 ]
Zhou, Yangtao [1 ,4 ]
机构
[1] Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China
[2] Liaoning Univ, Coll Chem, 66 Chongshan Rd, Shenyang 110036, Liaoning, Peoples R China
[3] China Med Univ, Dept Radiol, Shengjing Hosp, 36 Sanhao St, Shenyang 110004, Peoples R China
[4] Liaoning Acad Mat, KH Kuo Ctr Mat Characterizat, 280 Chuangxin Rd, Shenyang 110167, Peoples R China
关键词
Oxide film; Stainless steel; In-situ TEM; Strain-enhanced diffusion; PASSIVE FILMS; OXIDATION; CRYSTAL; CHEMISTRY; BEHAVIOR; INSIGHT; XPS;
D O I
10.1016/j.corsci.2025.112698
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The corrosion resistance of stainless steels exposed to humid environment is closely related to the surface oxide film. To date, the formation process and its correlation with the alloy defects are still unclear. The present study, using in-situ atomic-scale TEM characterization, reveals the growth process of oxide film on a fresh steel surface. The oxide formation involves the oxygen adsorption, the inward diffusion into alloy lattice, and the outward expansion of stable oxide film. The metal-oxide solid transformation is found to be promoted by the lattice strain of the alloy. The atomic structures of the oxides are imaged and analyzed.
引用
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页数:10
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