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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.1; Yang, B. J.1; Emori, W.3; Wang, J. Q.1
Corresponding AuthorWang, J. Q.(jqwang@imr.ac.cn)
2020-04-05
Source PublicationJOURNAL OF ALLOYS AND COMPOUNDS
ISSN0925-8388
Volume819Pages:11
AbstractThe 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.
KeywordHigh entropy alloy Electrochemical impedance spectroscopy Corrosion Passivation
Funding OrganizationNational Key Research and Development Program of China ; National Natural Science Foundation of China
DOI10.1016/j.jallcom.2019.152943
Indexed BySCI
Language英语
Funding ProjectNational Key Research and Development Program of China[2018YFB1105803] ; National Natural Science Foundation of China[51701214] ; National Natural Science Foundation of China[51771195]
WOS Research AreaChemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectChemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000507378300020
PublisherELSEVIER SCIENCE SA
Citation statistics
Cited Times:11[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/136746
Collection中国科学院金属研究所
Corresponding AuthorWang, J. Q.
Affiliation1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
2.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Peoples R China
3.Sichuan Univ Sci & Engn, Sch Mat Sci & Engn, Zigong 643000, Sichuan, Peoples R China
Recommended Citation
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.
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