Novel candidate of metal-based thermal barrier coatings: High-entropy alloy

doi:10.1016/j.surfcoat.2023.130087

IMR OpenIR

	Novel candidate of metal-based thermal barrier coatings: High-entropy alloy
	Wang, Xiangzhao 1; Yao, Haihua 1; Yuan, Li 1; Chen, Lijia 2; Xu, Fengfeng 1; Tan, Zhen 1; He, Dingyong 1; Yang, Yange 3; Liu, Yanbo 4; Zhou, Zheng 1
通讯作者	Chen, Lijia(lj.chen@giim.ac.can) ; Zhou, Zheng(zhouzhengbjut@bjut.edu.cn)
	2023-12-15
发表期刊	SURFACE & COATINGS TECHNOLOGY
ISSN	0257-8972
卷号	474 页码:11
摘要	To obtain compatible properties of low thermal conductivity and high thermal stability, Al0.6CoCrFeNiTi highentropy alloy was designed as a novel candidate of metal-based thermal barrier coatings (MBTBCs). The corresponding high-entropy alloy coatings were fabricated by both high-velocity oxygen-fuel spraying (HVOF) and atmospheric plasma spraying (APS), and then the dependence of thermal insulation properties on microstructure was investigated. The both coatings exhibit a simple body-centered cubic (BCC) structure, but present obvious difference in microstructure and defect characters which relates to the evolution of in-flight particles. Benefit from the extremely low thermal conductivity, the APS-deposited coating can increase 13.24 degrees C of the surface temperature of piston crown and yield a temperature reduction of 19.00 degrees C along the thickness direction, which mean a positivity on enhancing the power efficiency of vehicle engines without sacrificing the strength of aluminum alloy components. In virtue of a decoupling method, the crucial effect of microstructure on thermal conductivity is disclosed, thus interpreting the excellent thermal insulation property of APS-deposited coating dominated by grain refinement and disordered BCC structure. The present results demonstrate a great potential of high-entropy alloy coatings as thermal barrier application and provide an inspiration for future works aiming to design these coatings to meet specific engineering needs.
关键词	High-entropy alloy Thermal barrier coating Microstructure Thermal conductivity
资助者	National Natural Science Foundation of China
DOI	10.1016/j.surfcoat.2023.130087
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[52171060] ; National Natural Science Foundation of China[52001025] ; National Natural Science Foundation of China[52371043] ; National Natural Science Foundation of China[51771005]
WOS研究方向	Materials Science ; Physics
WOS类目	Materials Science, Coatings & Films ; Physics, Applied
WOS记录号	WOS:001101955200001
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：2[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/177383
专题	中国科学院金属研究所
通讯作者	Chen, Lijia; Zhou, Zheng
作者单位	1.Beijing Univ Technol, Fac Mat & Mfg, Beijing 100124, Peoples R China 2.Guangdong Acad Sci, Inst Intelligent Mfg, Guangdong Key Lab Modern Control Technol, Guangzhou 510000, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 4.Beijing Inst Technol, Sch Mat Sci & Engn, Beijing 100081, Peoples R China
推荐引用方式 GB/T 7714	Wang, Xiangzhao,Yao, Haihua,Yuan, Li,et al. Novel candidate of metal-based thermal barrier coatings: High-entropy alloy[J]. SURFACE & COATINGS TECHNOLOGY,2023,474:11.
APA	Wang, Xiangzhao.,Yao, Haihua.,Yuan, Li.,Chen, Lijia.,Xu, Fengfeng.,...&Zhou, Zheng.(2023).Novel candidate of metal-based thermal barrier coatings: High-entropy alloy.SURFACE & COATINGS TECHNOLOGY,474,11.
MLA	Wang, Xiangzhao,et al."Novel candidate of metal-based thermal barrier coatings: High-entropy alloy".SURFACE & COATINGS TECHNOLOGY 474(2023):11.