Influence of graphite-alloy interactions on corrosion of Ni-Mo-Cr alloy in molten fluorides

被引：42
|
作者：
Ai, Hua [1 ,2 ]
Hou, Juan [1 ,3 ]
Ye, Xiang-Xi [1 ]
Zeng, Chao Liu [4 ]
Sun, Hua [1 ]
Li, Xiaoyun [1 ]
Yu, Guojun [1 ]
Zhou, Xingtai [1 ]
Wang, Jian-Qiang [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] Gen Elect China Res & Dev Ctr Co Ltd, Shanghai 201203, Peoples R China
[4] Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China
来源：
JOURNAL OF NUCLEAR MATERIALS | 2018年 / 503卷
基金：
中国国家自然科学基金;
关键词：
Ni-base alloy; Molten salt; EPMA; Weight loss; De-alloying; High temperature corrosion; FLINAK SALT ENVIRONMENTS; MOISTURE;
D O I：
10.1016/j.jnucmat.2018.03.001
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this study, the effects of graphite-alloy interaction on corrosion of Ni-Mo-Cr alloy in molten FLiNaK salt were investigated. The corrosion tests of Ni-Mo-Cr alloys were conducted in graphite crucibles, to examine the differences of test specimens in conditions of electric contact and isolated with graphite, respectively. The corrosion attack is severer with more weight loss and deeper Cr depletion layer in samples electric contact with graphite than those isolated with graphite. The occurrence of galvanic corrosion between alloy specimens and graphite container was confirmed by electrochemical measurement. The corrosion is controlled by nonelectric transfer in isolated test while electrochemical reaction accelerated corrosion in electric contact test. (C) 2018 Elsevier B.V. All rights reserved.
引用
收藏
页码：116 / 123
页数：8
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