(La0.2Ce0.2Nd0.2Sm0.2Eu0.2)PO4: A high-entropy rare-earth phosphate monazite ceramic with low thermal conductivity and good compatibility with Al2O3

doi:10.1016/j.jmst.2019.08.012

CORC > 金属研究所 > 中国科学院金属研究所

	(La0.2Ce0.2Nd0.2Sm0.2Eu0.2)PO4: A high-entropy rare-earth phosphate monazite ceramic with low thermal conductivity and good compatibility with Al2O3
	Zhao, Zifan 1,2; Chen, Heng 1; Xiang, Huimin 1; Dai, Fu-Zhi 1; Wan, Xiaohui 3; Peng, Zhijian 2; Zhou, Yanchun 1
刊名	JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
	2019-12-01
卷号	35 期号:12 页码:2892-2896
关键词	(La0.2Ce0.2Nd0.2Sm0.2Eu0.2)PO4 High-entropy ceramics Al(2)O(3)f/Al2O3 ceramic matrix composites Environmental barrier coating materials Interphase material Thermal expansion coefficient Thermal conductivity Solution synthesis Rare-earth phosphates Monazite
ISSN号	1005-0302
DOI	10.1016/j.jmst.2019.08.012
通讯作者	Peng, Zhijian(pengzhijian@cugb.edu.cn) ; Zhou, Yanchun(yczhou@imr.ac.cn)
英文摘要	Low thermal conductivity, matched thermal expansion coefficient and good compatibility are general requirements for the environmental/thermal barrier coatings (EBCs/TBCs) and interphases for Al2O3f/Al2O3 composites. In this work, a novel high-entropy (HE) rare-earth phosphate monazite ceramic (La0.2Ce0.2Nd0.2Sm0.2Eu0.2)PO4 is designed and successfully synthesized. This new type of HE rare-earth phosphate monazite exhibits good chemical compatibility with Al2O3, without reaction with Al2O3 as high as 1600 degrees C in air. Moreover, the thermal expansion coefficient (TEC) of HE (La0.2Ce0.2Nd0.2Sm0.2Eu0.2)PO4 (8.9 x 10(-6)/degrees C at 300-1000 degrees C) is close to that of Al2O3. The thermal conductivity of HE (La0.2Ce0.2Nd0.2Sm0.2Eu0.2)PO4 at room temperature is as low as 2.08 W.m(-1).K-1, which is about 42% lower than that of LaPO4. Good chemical compatibility, close TEC to that of Al2O3, and low thermal conductivity indicate that HE (La0.2Ce0.2Nd0.2Sm0.2Eu0.2)PO4 is suitable as a candidate EBC/TBC material and an interphase for Al2O3f/Al2O3 composites. (C) 2019 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
资助项目	National Natural Science Foundation of China[51672064] ; National Natural Science Foundation of China[U1435206]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	JOURNAL MATER SCI TECHNOL
WOS记录号	WOS:000502840400020
资助机构	National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/136395]
专题	金属研究所_中国科学院金属研究所
通讯作者	Peng, Zhijian; Zhou, Yanchun
作者单位	1.Aerosp Res Inst Mat & Proc Technol, Sci & Technol Adv Funct Composite Lab, Beijing 100076, Peoples R China 2.China Univ Geosci, Sch Engn & Technol, Beijing 100083, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Zifan,Chen, Heng,Xiang, Huimin,et al. (La0.2Ce0.2Nd0.2Sm0.2Eu0.2)PO4: A high-entropy rare-earth phosphate monazite ceramic with low thermal conductivity and good compatibility with Al2O3[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2019,35(12):2892-2896.
APA	Zhao, Zifan.,Chen, Heng.,Xiang, Huimin.,Dai, Fu-Zhi.,Wan, Xiaohui.,...&Zhou, Yanchun.(2019).(La0.2Ce0.2Nd0.2Sm0.2Eu0.2)PO4: A high-entropy rare-earth phosphate monazite ceramic with low thermal conductivity and good compatibility with Al2O3.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,35(12),2892-2896.
MLA	Zhao, Zifan,et al."(La0.2Ce0.2Nd0.2Sm0.2Eu0.2)PO4: A high-entropy rare-earth phosphate monazite ceramic with low thermal conductivity and good compatibility with Al2O3".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 35.12(2019):2892-2896.