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Electrochemical Studies of the Corrosion of Pure Fe, Ni and Cr in Molten (Li,Na,K)F
Y. X. Xu; Y. L. Wang; C. L. Zeng
2014
Source PublicationHigh Temperature Materials and Processes
ISSN0334-6455
Volume33Issue:3Pages:269-276
AbstractThe corrosion of structural materials is a great challenge for the applications of a molten salt reactor using molten fluorides. In this paper, electrochemical behavior of pure Fe, Ni and Cr has been investigated in molten (Li,Na,K)F at 973 K by potentiodynamic polarization and electrochemical impedance spectroscopy. The experimental results indicated that three metals are all in active state at the corrosion potential, with an increase in the corrosion potential by the following order: Cr, Fe, Ni. The free corrosion current density of Ni is more than one order of magnitude lower than that of Fe and Cr. A Warburg impedance was observed in the impedance plots for the corrosion of Cr, but not for Ni and Fe. Ni is the most stable metal, then Fe and Cr, and the corrosion of Cr is controlled by the diffusion of oxidants in the melt.
description.department[xu, y. x. ; wang, y. l. ; zeng, c. l.] chinese acad sci, inst met res, state key lab corros & protect, shenyang 110016, peoples r china. ; zeng, cl (reprint author), chinese acad sci, inst met res, state key lab corros & protect, shenyang 110016, peoples r china. ; clzeng@imr.ac.cn
KeywordNi Fe Cr Molten Fluorides Corrosion Electrochemical Techniques Fluoride Salt Chromium
URL查看原文
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/73458
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
Y. X. Xu,Y. L. Wang,C. L. Zeng. Electrochemical Studies of the Corrosion of Pure Fe, Ni and Cr in Molten (Li,Na,K)F[J]. High Temperature Materials and Processes,2014,33(3):269-276.
APA Y. X. Xu,Y. L. Wang,&C. L. Zeng.(2014).Electrochemical Studies of the Corrosion of Pure Fe, Ni and Cr in Molten (Li,Na,K)F.High Temperature Materials and Processes,33(3),269-276.
MLA Y. X. Xu,et al."Electrochemical Studies of the Corrosion of Pure Fe, Ni and Cr in Molten (Li,Na,K)F".High Temperature Materials and Processes 33.3(2014):269-276.
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