(Ho0.25Lu0.25Yb0.25Eu0.25)(2)SiO5 high-entropy ceramic with low thermal conductivity, tunable thermal expansion coefficient, and excellent resistance to CMAS corrosion

doi:10.1007/s40145-022-0609-z

IMR OpenIR

	(Ho0.25Lu0.25Yb0.25Eu0.25)(2)SiO5 high-entropy ceramic with low thermal conductivity, tunable thermal expansion coefficient, and excellent resistance to CMAS corrosion
	Chen, Zhilin 1; Tian, Zhilin 1; Zheng, Liya 1; Ming, Keyu 1; Ren, Xiaomin 2,3; Wang, Jingyang 2; Li, Bin 1
通讯作者	Tian, Zhilin(tianzhlin@mail.sysu.edu.cn) ; Li, Bin(libin75@mail.sysu.edu.cn)
	2022-06-15
发表期刊	JOURNAL OF ADVANCED CERAMICS
ISSN	2226-4108
页码	15
摘要	Low thermal conductivity, compatible thermal expansion coefficient, and good calcium-magnesium-aluminosilicate (CMAS) corrosion resistance are critical requirements of environmental barrier coatings for silicon-based ceramics. Rare earth silicates have been recognized as one of the most promising environmental barrier coating candidates for good water vapor corrosion resistance. However, the relatively high thermal conductivity and high thermal expansion coefficient limit the practical application. Inspired by the high entropy effect, a novel rare earth monosilicate solid solution (Ho0.25Lu0.25Yb0.25Eu0.25)(2)SiO5 was designed to improve the overall performance. The as-synthesized (Ho0.25Lu0.25Yb0.25Eu0.25)(2)SiO5 shows very low thermal conductivity (1.07 W.m(-1).K-1 at 600 degrees C). Point defects including mass mismatch and oxygen vacancies mainly contribute to the good thermal insulation properties. The thermal expansion coefficient of (Ho0.25Lu0.25Yb0.25Eu0.25)(2)SiO5 can be decreased to (4.0-5.9)x10(-6) K-1 due to severe lattice distortion and chemical bonding variation, which matches well with that of SiC ((4.5-5.5)x10(-6) K-1). In addition, (Ho0.25Lu0.25Yb0.25Eu0.25)(2)SiO5 presents good resistance to CMAS corrosion. The improved performance of (Ho0.25Lu0.25Yb0.25Eu0.25)(2)SiO5 highlights it as a promising environmental barrier coating candidate.
关键词	high-entropy ceramic environmental barrier coating (EBC) rare earth silicate thermal conductivity thermal expansion coefficient (TEC)
资助者	Guangdong Basic and Applied Basic Research Foundation for Distinguished Young Scholars ; Guang Dong Basic and Applied Basic Research Foundation for Young Scholars ; Shenzhen Science and Technology Program ; Fundamental Research Funds for the Central Universities, Sun Yat-sen University
DOI	10.1007/s40145-022-0609-z
收录类别	SCI
语种	英语
资助项目	Guangdong Basic and Applied Basic Research Foundation for Distinguished Young Scholars[2021B1515020083] ; Guang Dong Basic and Applied Basic Research Foundation for Young Scholars[21201910240002803] ; Shenzhen Science and Technology Program[GXWD20201231165807008] ; Shenzhen Science and Technology Program[20200831172254001] ; Fundamental Research Funds for the Central Universities, Sun Yat-sen University[2021qntd10]
WOS研究方向	Materials Science
WOS类目	Materials Science, Ceramics
WOS记录号	WOS:000811954800002
出版者	SPRINGER
引用统计	被引频次：44[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/321006/174447
专题	中国科学院金属研究所
通讯作者	Tian, Zhilin; Li, Bin
作者单位	1.Sun Yat Sen Univ, Sch Mat, Shenzhen Campus, Shenzhen 518107, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 3.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Peoples R China
推荐引用方式 GB/T 7714	Chen, Zhilin,Tian, Zhilin,Zheng, Liya,et al. (Ho0.25Lu0.25Yb0.25Eu0.25)(2)SiO5 high-entropy ceramic with low thermal conductivity, tunable thermal expansion coefficient, and excellent resistance to CMAS corrosion[J]. JOURNAL OF ADVANCED CERAMICS,2022:15.
APA	Chen, Zhilin.,Tian, Zhilin.,Zheng, Liya.,Ming, Keyu.,Ren, Xiaomin.,...&Li, Bin.(2022).(Ho0.25Lu0.25Yb0.25Eu0.25)(2)SiO5 high-entropy ceramic with low thermal conductivity, tunable thermal expansion coefficient, and excellent resistance to CMAS corrosion.JOURNAL OF ADVANCED CERAMICS,15.
MLA	Chen, Zhilin,et al."(Ho0.25Lu0.25Yb0.25Eu0.25)(2)SiO5 high-entropy ceramic with low thermal conductivity, tunable thermal expansion coefficient, and excellent resistance to CMAS corrosion".JOURNAL OF ADVANCED CERAMICS (2022):15.