The roles of Ni segregation on the oxidation kinetics of austenitic stainless steel 316L exposed to oxygen-containing liquid lead-bismuth eutectic (LBE)

被引：0
|
作者：
Guo, Shaoqiang [1 ]
Chen, Jianye [1 ]
Ma, Zelin [1 ]
Du, Qian [1 ]
Lu, Chenyang [1 ]
Xie, Shijing [1 ]
Long, Bin [2 ]
Yun, Di [1 ]
Gu, Long [3 ]
机构：
[1] Xi An Jiao Tong Univ, Sch Nucl Sci & Technol, Shaanxi Key Lab Adv Nucl Energy & Technol, Xian 710049, Shaanxi, Peoples R China
[2] China Inst Atom Energy, POB 275-92, Beijing 102413, Peoples R China
[3] Lanzhou Univ, Sch Nucl Sci & Technol, Lanzhou 730000, Gansu, Peoples R China
来源：
CORROSION SCIENCE | 2025年 / 244卷
基金：
中国国家自然科学基金;
关键词：
A. Austenitic steel; B; TEM; EBSD; C. Liquid metal corrosion; C; Oxidation; FERRITIC-MARTENSITIC STEELS; LONG-TERM BEHAVIORS; FE-9CR-1MO STEEL; DEGREES-C; ELECTRON-MICROSCOPY; CORROSION BEHAVIOR; OXIDE SCALES; MECHANISM; TEMPERATURE; ALLOY;
D O I：
10.1016/j.corsci.2024.112644
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The micro-to-atomic structure of the oxide scale formed on AISI 316L austenitic stainless steel exposed to oxygen- containing liquid LBE at 550 degrees C is characterized by SEM-EDS, EBSD, FIB-TEM and synchrotron radiation microXRD. Nickel that was believed to be detrimental to steel corrosion in Pb-Bi is revealed to be beneficial on retarding the oxidation kinetics. Ni was not oxidized and existed as metallic Ni-rich nanophase in the internal oxidation zone (IOZ). The inward diffusion of Ni from IOZ to the bulk steel caused the segregation of coarse Nirich precipitates on grain boundaries and the steel/IOZ interface, which hindered the intergranular and possibly the trans-granular diffusion.
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页数：17
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