Corrosion behaviour of 316H stainless steel in molten FLiNak eutectic salt containing graphite particles

被引：44
|
作者：
Liu, Qi [1 ,2 ,3 ]
Sun, Hua [1 ,2 ,3 ]
Yin, Huiqin [1 ,2 ,3 ]
Guo, Lili [1 ,4 ]
Qiu, Jie [5 ]
Lin, Jian [1 ,2 ,3 ]
Tang, Zhongfeng [1 ,2 ,3 ,4 ]
机构：
[1] Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China
[2] Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China
[3] Chinese Acad Sci, Key Lab Interfacial Phys & Technol, Shanghai 201800, Peoples R China
[4] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
[5] Univ Calif Berkeley, Dept Nucl Engn, Berkeley, CA 94720 USA
来源：
CORROSION SCIENCE | 2019年 / 160卷
基金：
国家重点研发计划;
关键词：
Graphite particles; LiF-NaF-KF; 316H stainless steel; Corrosion; Molten salt; HIGH-TEMPERATURE REACTOR; HASTELLOY-N; FLUORIDE; CR; CARBURIZATION; ALLOYS; MO;
D O I：
10.1016/j.corsci.2019.108174
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The effect of various concentrations of graphite particles in molten FLiNaK eutectic salt (LiF-NaF-KF: 46.5-11.5-42.0 mol.%) on the corrosion behaviour of 316H stainless steel was investigated using a static immersion corrosion technique. Higher graphite particle concentration caused severer corrosion. Weight loss, Cr depletion distance, and surface Cr carbide concentration were positively correlated with graphite particle concentration in molten FLiNaK eutectic salt. Carbon from the graphite particles in the molten FLiNaK salt diffused into the 316H stainless steel and formed Cr carbides. The rate of carbide formation on the 316H stainless steel surface was much lower than the Cr corrosion rate.
引用
收藏
页数：7
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