Tailoring microstructure and corrosion behavior of CoNiVAlx medium entropy alloys via Al addition

Zhimin Pan; Hong Luo; Qiancheng Zhao; Hongxu Cheng; Ya Wei; Xuefei Wang; Bowei Zhang; Xiaogang Li

doi:10.1016/j.corsci.2022.110570

Tailoring microstructure and corrosion behavior of CoNiVAl_x medium entropy alloys via Al addition

Zhimin Pan
, Hong Luo^*
, Qiancheng Zhao
, Hongxu Cheng
, Ya Wei
, Xuefei Wang
, Bowei Zhang
, Xiaogang Li

^*此作品的通讯作者

University of Science and Technology Beijing
Key Laboratory of Precision Opto-Mechatronics Technology (Ministry of Education)

科研成果: 期刊稿件 › 文章 › 同行评审

110 引用（Scopus）

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The effect of Al addition on the microstructure and corrosion behavior of CoNiVAl_x medium entropy alloys (MEAs) was investigated. Results indicated that the enhanced corrosion resistance caused by Al addition might be attributed to the dominant role of Al in stabilizing the passive film. The difference in the Volta potentials of FCC and B2 phases indicated the existence of microgalvanic coupling, which suggested that the B2 phase served as a localized cathode while the FCC matrix and FCC lath acted as anodes. This accounted for the pitting mechanism of CoNiVAl_x MEAs via Al addition.

源语言	英语
文章编号	110570
期刊	Corrosion Science
卷	207
DOI	https://doi.org/10.1016/j.corsci.2022.110570
出版状态	已出版 - 10月 2022
已对外发布	是

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title = "Tailoring microstructure and corrosion behavior of CoNiVAlx medium entropy alloys via Al addition",

abstract = "The effect of Al addition on the microstructure and corrosion behavior of CoNiVAlx medium entropy alloys (MEAs) was investigated. Results indicated that the enhanced corrosion resistance caused by Al addition might be attributed to the dominant role of Al in stabilizing the passive film. The difference in the Volta potentials of FCC and B2 phases indicated the existence of microgalvanic coupling, which suggested that the B2 phase served as a localized cathode while the FCC matrix and FCC lath acted as anodes. This accounted for the pitting mechanism of CoNiVAlx MEAs via Al addition.",

keywords = "Corrosion resistance, Medium entropy alloy, Microstructure, Passive film, Phase segregation",

author = "Zhimin Pan and Hong Luo and Qiancheng Zhao and Hongxu Cheng and Ya Wei and Xuefei Wang and Bowei Zhang and Xiaogang Li",

note = "Publisher Copyright: {\textcopyright} 2022 Elsevier Ltd",

year = "2022",

month = oct,

doi = "10.1016/j.corsci.2022.110570",

language = "英语",

volume = "207",

journal = "Corrosion Science",

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TY - JOUR

T1 - Tailoring microstructure and corrosion behavior of CoNiVAlx medium entropy alloys via Al addition

AU - Pan, Zhimin

AU - Luo, Hong

AU - Zhao, Qiancheng

AU - Cheng, Hongxu

AU - Wei, Ya

AU - Wang, Xuefei

AU - Zhang, Bowei

AU - Li, Xiaogang

PY - 2022/10

Y1 - 2022/10

N2 - The effect of Al addition on the microstructure and corrosion behavior of CoNiVAlx medium entropy alloys (MEAs) was investigated. Results indicated that the enhanced corrosion resistance caused by Al addition might be attributed to the dominant role of Al in stabilizing the passive film. The difference in the Volta potentials of FCC and B2 phases indicated the existence of microgalvanic coupling, which suggested that the B2 phase served as a localized cathode while the FCC matrix and FCC lath acted as anodes. This accounted for the pitting mechanism of CoNiVAlx MEAs via Al addition.

AB - The effect of Al addition on the microstructure and corrosion behavior of CoNiVAlx medium entropy alloys (MEAs) was investigated. Results indicated that the enhanced corrosion resistance caused by Al addition might be attributed to the dominant role of Al in stabilizing the passive film. The difference in the Volta potentials of FCC and B2 phases indicated the existence of microgalvanic coupling, which suggested that the B2 phase served as a localized cathode while the FCC matrix and FCC lath acted as anodes. This accounted for the pitting mechanism of CoNiVAlx MEAs via Al addition.

KW - Corrosion resistance

KW - Medium entropy alloy

KW - Microstructure

KW - Passive film

KW - Phase segregation

UR - https://www.scopus.com/pages/publications/85136547586

U2 - 10.1016/j.corsci.2022.110570

DO - 10.1016/j.corsci.2022.110570

M3 - 文章

AN - SCOPUS:85136547586

SN - 0010-938X

VL - 207

JO - Corrosion Science

JF - Corrosion Science

M1 - 110570

ER -

Tailoring microstructure and corrosion behavior of CoNiVAlx medium entropy alloys via Al addition

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Tailoring microstructure and corrosion behavior of CoNiVAl_x medium entropy alloys via Al addition