Corrosion behaviours of Ni-Mo-Cr alloy and 316 stainless steel in molten NaCl-KCl-AlCl3 salts at high temperature

被引：5
作者：
Chen, Saijun [1 ,2 ]
Liu, Qi [2 ,4 ]
Yang, Zhigang [1 ,2 ]
Guo, Fangyuan [3 ]
Chen, Liuping [3 ]
Zhang, Zhigang [1 ]
Tang, Zhongfeng [2 ,4 ]
机构：
[1] Shenyang Univ Chem Technol, Shenyang 110142, Peoples R China
[2] Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China
[3] Chinasalt Jintan Co Ltd, Mine Salt Comprehens Utilizat Ctr Jiangsu Prov, Changzhou, Peoples R China
[4] Dalian Natl Lab Clean Energy, Dalian, Peoples R China
来源：
CORROSION ENGINEERING SCIENCE AND TECHNOLOGY | 2023年 / 58卷 / 02期
关键词：
Molten salt; corrosion; Ni-Mo-Cr alloy; 316 stainless steel; morphology; THERMAL-ENERGY STORAGE; CHLORIDE SALTS; NEXT-GENERATION; FLUORIDE; PURIFICATION; PLANTS;
D O I：
10.1080/1478422X.2022.2148855
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The corrosion behaviours of Ni-Mo-Cr alloy and 316 stainless steel samples after immersing in NaCl-KCl-AlCl3 salt at 400.0 degrees C for 168 h were investigated. The surface of Ni-Mo-Cr alloy basically kept its pre-corrosion morphology, with only a few corrosion pits. While NaCl-KCl-AlCl3 salt had stronger corrosivity to 316SS. After corrosion, the grain boundary of the surface of 316SS alloy was clearly visible, and the Fe and Cr atoms on the surface of 316SS were selectively corroded, leaving a Ni- rich layer of about 6.5 mu m on the outmost surface of 316SS. At the temperature of 400.0 degrees C, the corrosion resistance of Ni-Mo-Cr alloy to molten NaCl-KCl-AlCl3 salt was better than that of 316SS.
引用
收藏
页码：103 / 107
页数：5
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