Effects of Mn on the electrochemical corrosion and passivation behavior of CoFeNiMnCr high-entropy alloy system in H2SO4 solution

doi:10.1016/j.jallcom.2019.152943

CORC > 金属研究所 > 中国科学院金属研究所

	Effects of Mn on the electrochemical corrosion and passivation behavior of CoFeNiMnCr high-entropy alloy system in H2SO4 solution
	Yang, J.1,2; Wu, J.1,2; Zhang, C. Y.1,2; Zhang, S. D.2; Yang, B. J.2; Emori, W.3; Wang, J. Q.2
刊名	JOURNAL OF ALLOYS AND COMPOUNDS
	2020-04-05
卷号	819 页码:11
关键词	High entropy alloy Electrochemical impedance spectroscopy Corrosion Passivation
ISSN号	0925-8388
DOI	10.1016/j.jallcom.2019.152943
通讯作者	Wang, J. Q.(jqwang@imr.ac.cn)
英文摘要	The present work investigates the influence of Mn on the electrochemical corrosion and passivation behaviors of CoFeNiMnCr high-entropy alloys in a 0.1 M H2SO4 solution. Potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) results showed that the addition of Mn caused a marked difference in the active dissolution regions and active-passive transition regions. It was deduced from EIS and the potential decay results that the alloyed Mn suppressed the passivation processes and increased the chemical dissolution rate of the passive films. By contrast, the alloyed Mn did not affect the protective properties of the passive films of the alloys. Surface analysis indicated that Mn addition had little influence on the composition and thickness of the passive films. Thus the passivation current densities and transpassive potentials of the CoFeNiMnCr high-entropy alloy remained almost unchanged with the addition of Mn. (C) 2019 Elsevier B.V. All rights reserved.
资助项目	National Key Research and Development Program of China[2018YFB1105803] ; National Natural Science Foundation of China[51701214] ; National Natural Science Foundation of China[51771195]
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000507378300020
资助机构	National Key Research and Development Program of China ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/136742]
专题	金属研究所_中国科学院金属研究所
通讯作者	Wang, J. Q.
作者单位	1.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 3.Sichuan Univ Sci & Engn, Sch Mat Sci & Engn, Zigong 643000, Sichuan, Peoples R China
推荐引用方式 GB/T 7714	Yang, J.,Wu, J.,Zhang, C. Y.,et al. Effects of Mn on the electrochemical corrosion and passivation behavior of CoFeNiMnCr high-entropy alloy system in H2SO4 solution[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2020,819:11.
APA	Yang, J..,Wu, J..,Zhang, C. Y..,Zhang, S. D..,Yang, B. J..,...&Wang, J. Q..(2020).Effects of Mn on the electrochemical corrosion and passivation behavior of CoFeNiMnCr high-entropy alloy system in H2SO4 solution.JOURNAL OF ALLOYS AND COMPOUNDS,819,11.
MLA	Yang, J.,et al."Effects of Mn on the electrochemical corrosion and passivation behavior of CoFeNiMnCr high-entropy alloy system in H2SO4 solution".JOURNAL OF ALLOYS AND COMPOUNDS 819(2020):11.