Effects of O2- additive on corrosion behavior of Fe-Cr-Ni alloy in molten fluoride salts

被引：39

作者：

Ai, Hua ^{[1
,2
]}

Shen, Miao ^{[1
]}

Sun, Hua ^{[1
]}

Dolan, Kieran Patrick ^{[3
]}

Wang, Chenyang ^{[1
,2
]}

Ge, Min ^{[1
]}

Yin, Huiqin ^{[1
]}

Li, Xiaoyun ^{[1
]}

Peng, Hao ^{[1
]}

Li, Na ^{[1
]}

Xie, Leidong ^{[1
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Appl Phys, Ctr Thorium Molten Salts Reactor Syst, Shanghai 201800, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[3] MIT, Nucl Sci & Engn Dept, 77 Massachusetts Ave, Cambridge, MA 02139 USA

来源：

CORROSION SCIENCE | 2019年 / 150卷

基金：

美国国家科学基金会;

关键词：

Molten salts; Stainless steel; EIS; Raman spectroscopy; High temperature corrosion; FLINAK SALT; HASTELLOY-N; STEEL; MOISTURE; GH3535;

D O I：

10.1016/j.corsci.2019.01.040

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Corrosion behavior of 316 stainless steel (316SS) was studied in molten FLINAK and FLINAK + O2- salts at 650 degrees C by weight loss measurement, electrochemical methods and characterization techniques including scanning electron microscopy (SEM), X-Ray diffraction (XRD), electron probe micro-analyzer (EPMA) and Raman spectroscopy. The results showed that 316SS suffered corrosion attack in molten FLINAK. Notable corrosion products Cr2O3 and Fe3O4 were detected on the surface of 316SS in addition to subsurface voids. When O2- was added, the corrosion product changed to LiCrO2, which protected the alloy constituents from diffusion into the salt.

引用

页码：175 / 182

页数：8

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