Corrosion behaviors of ODS-FeCrAl in oxygen-saturated lead-bismuth eutectic at 550°C: Effects of grain boundaries and minor elements

被引：24
作者：
Zhu, Zhaoguang [1 ,2 ]
Tan, Jibo [1 ]
Zhang, Ziyu [1 ]
Wu, Xinqiang [1 ]
Li, Jing [1 ]
Wang, Xiang [1 ]
Han, En-Hou [1 ]
Ke, Wei [1 ]
机构：
[1] Chinese Acad Sci, Inst Met Res, CAS Key Lab Nucl Mat & Safety Assessment, Liaoning Key Lab Safety & Assessment Tech Nucl Mat, Shenyang 110016, Peoples R China
[2] Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Peoples R China
来源：
JOURNAL OF NUCLEAR MATERIALS | 2023年 / 587卷
关键词：
Steel; Tem; Oxidation; High temperature corrosion; Thermodynamic diagrams; LIQUID PB-BI; AUSTENITIC STAINLESS-STEELS; OXIDATION MECHANISM; TENSILE PROPERTIES; FE-9CR-1MO STEEL; DEGREES-C; TEMPERATURE; ALLOYS; LBE; RESISTANCE;
D O I：
10.1016/j.jnucmat.2023.154710
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Long-term corrosion behavior of ODS-FeCrAl tube was investigated in oxygen-saturated static liquid leadbismuth eutectic (LBE) at 550 & DEG;C. Different densities of sub-grain boundaries (sub-GBs) lead to different corrosion behaviors on the inside and outside surfaces of the tube. The oxide film formed on the inside surface consists of Fe3O4, Fe-Cr-Al spinel and Al2O3, and on the outside surface consists of Fe-Cr-Al spinel rich in Cr & Al and Al2O3. Excessively high density of sub-GBs accelerates the oxidation rate. The precipitation of W & Ti promotes the formation of Cr-rich and Al-rich oxides. The corrosion mechanism of ODS-FeCrAl in liquid LBE is discussed.
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页数：15
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