Air plasma sprayed high-entropy AlCoCrFeNiY coating with excellent oxidation and spallation resistance under cyclic oxidation at 1050–1150 °C

Jie Lu; Ying Chen; Zihao Sun; Ling Li; Xuanzhen Liu; Aihui Huang; Han Zhang; Fangwei Guo; Xiancheng Zhang; Xiaofeng Zhao

doi:10.1016/j.corsci.2022.110151

Air plasma sprayed high-entropy AlCoCrFeNiY coating with excellent oxidation and spallation resistance under cyclic oxidation at 1050–1150 °C

Jie Lu, Ying Chen, Zihao Sun, Ling Li, Xuanzhen Liu, Aihui Huang, Han Zhang, Fangwei Guo, Xiancheng Zhang, Xiaofeng Zhao

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Abstract

An AlCoCrFeNiY high-entropy alloy coating was prepared using air plasma spray. The cyclic oxidation behavior of the coating was investigated and compared with that of a conventional NiCoCrAlY coating. It is demonstrated that the AlCoCrFeNiY coating exhibits much stronger resistance to oxidation and spallation than the NiCoCrAlY coating when they are thermally cycled between room temperature and 1050-1150 °C. The difference is attributed to a much lower growth rate of the oxide scale on the AlCoCrFeNiY coating as a result of its significantly higher activation energy of oxidation and the absence of spinel.

Original language	English
Pages (from-to)	110151
Journal	Corrosion Science
Volume	198
Early online date	3 Feb 2022
DOIs	https://doi.org/10.1016/j.corsci.2022.110151
Publication status	Published - 15 Apr 2022

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10.1016/j.corsci.2022.110151

Accepted Manuscript_Air plasma sprayed high-entropy AlCoCrFeNiY coating with excellent oxidation and spallation resistance under cyclic oxidation at 1050-1150 °CAccepted author manuscript, 3.15 MBLicence: CC BY-NC-ND

https://linkinghub.elsevier.com/retrieve/pii/S0010938X22000695

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@article{68c86ae053604419a15a27c940afbe80,

title = "Air plasma sprayed high-entropy AlCoCrFeNiY coating with excellent oxidation and spallation resistance under cyclic oxidation at 1050–1150 °C",

abstract = "An AlCoCrFeNiY high-entropy alloy coating was prepared using air plasma spray. The cyclic oxidation behavior of the coating was investigated and compared with that of a conventional NiCoCrAlY coating. It is demonstrated that the AlCoCrFeNiY coating exhibits much stronger resistance to oxidation and spallation than the NiCoCrAlY coating when they are thermally cycled between room temperature and 1050-1150 °C. The difference is attributed to a much lower growth rate of the oxide scale on the AlCoCrFeNiY coating as a result of its significantly higher activation energy of oxidation and the absence of spinel.",

author = "Jie Lu and Ying Chen and Zihao Sun and Ling Li and Xuanzhen Liu and Aihui Huang and Han Zhang and Fangwei Guo and Xiancheng Zhang and Xiaofeng Zhao",

year = "2022",

month = apr,

day = "15",

doi = "10.1016/j.corsci.2022.110151",

language = "English",

volume = "198",

pages = "110151",

journal = "Corrosion Science ",

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TY - JOUR

T1 - Air plasma sprayed high-entropy AlCoCrFeNiY coating with excellent oxidation and spallation resistance under cyclic oxidation at 1050–1150 °C

AU - Lu, Jie

AU - Chen, Ying

AU - Sun, Zihao

AU - Li, Ling

AU - Liu, Xuanzhen

AU - Huang, Aihui

AU - Zhang, Han

AU - Guo, Fangwei

AU - Zhang, Xiancheng

AU - Zhao, Xiaofeng

PY - 2022/4/15

Y1 - 2022/4/15

N2 - An AlCoCrFeNiY high-entropy alloy coating was prepared using air plasma spray. The cyclic oxidation behavior of the coating was investigated and compared with that of a conventional NiCoCrAlY coating. It is demonstrated that the AlCoCrFeNiY coating exhibits much stronger resistance to oxidation and spallation than the NiCoCrAlY coating when they are thermally cycled between room temperature and 1050-1150 °C. The difference is attributed to a much lower growth rate of the oxide scale on the AlCoCrFeNiY coating as a result of its significantly higher activation energy of oxidation and the absence of spinel.

AB - An AlCoCrFeNiY high-entropy alloy coating was prepared using air plasma spray. The cyclic oxidation behavior of the coating was investigated and compared with that of a conventional NiCoCrAlY coating. It is demonstrated that the AlCoCrFeNiY coating exhibits much stronger resistance to oxidation and spallation than the NiCoCrAlY coating when they are thermally cycled between room temperature and 1050-1150 °C. The difference is attributed to a much lower growth rate of the oxide scale on the AlCoCrFeNiY coating as a result of its significantly higher activation energy of oxidation and the absence of spinel.

U2 - 10.1016/j.corsci.2022.110151

DO - 10.1016/j.corsci.2022.110151

M3 - Article

SN - 0010-938X

VL - 198

SP - 110151

JO - Corrosion Science

JF - Corrosion Science

ER -

Air plasma sprayed high-entropy AlCoCrFeNiY coating with excellent oxidation and spallation resistance under cyclic oxidation at 1050–1150 °C

Abstract

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