Mechanical and thermal properties of RE4Hf3O12 (RE=Ho, Er, Tm) ceramics with defect fluorite structure

doi:10.1016/j.jmst.2019.04.025

IMR OpenIR

	Mechanical and thermal properties of RE4Hf3O12 (RE=Ho, Er, Tm) ceramics with defect fluorite structure
	Hu, Wanpeng 1,2; Lei, Yiming 1,2; Zhang, Jie 1; Wang, Jingyang 1
通讯作者	Zhang, Jie(jiezhang@imr.ac.cn)
	2019-09-01
发表期刊	JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN	1005-0302
卷号	35 期号:9 页码:2064-2069
摘要	The thermal and environmental barrier coatings (T/EBC) are technologically important for advanced propulsion engine system. In this study. RE4Hf3O12 (RE=Ho, Er, Tm) with defect fluorite structure was investigated for potential use as top TBC layer. Dense pellets were fabricated via a hot pressing method and the mechanical and thermal properties were characterized. RE4Hf3O12 (RE=Ho, Er, Tm) possessed a high Vickers hardness of 11 GPa. The material retained high elastic modulus at elevated temperatures up to 1773 K, which made it attractive for high temperature application. The coefficient of thermal expansion (CTE) of RE4Hf3O12 (RE = Ho, Er, Tm) laid in the range between 7 x 10(-6) K-1 to 10 x 10(-6) K-1 from 473 K to 1673 K. In addition, the rare earth hafnates exhibited lower thermal conductivity which rendered it a good candidate material for thermal barrier applications. (C) 2019 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
关键词	Rare earth hafnate Thermal/environmental barrier coating Mechanical property Thermal property
资助者	National Key R&D Program of China ; National Natural Science Foundation of China ; International Cooperation Key Program
DOI	10.1016/j.jmst.2019.04.025
收录类别	SCI
语种	英语
资助项目	National Key R&D Program of China[2017YFB0703201] ; National Natural Science Foundation of China[51402311] ; National Natural Science Foundation of China[51372252] ; National Natural Science Foundation of China[51772302] ; International Cooperation Key Program[174321KYSB20180008]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000475870600033
出版者	JOURNAL MATER SCI TECHNOL
引用统计	被引频次：28[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/321006/134626
专题	中国科学院金属研究所
通讯作者	Zhang, Jie
作者单位	1.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Adv Ceram & Composites Div, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Hu, Wanpeng,Lei, Yiming,Zhang, Jie,et al. Mechanical and thermal properties of RE4Hf3O12 (RE=Ho, Er, Tm) ceramics with defect fluorite structure[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2019,35(9):2064-2069.
APA	Hu, Wanpeng,Lei, Yiming,Zhang, Jie,&Wang, Jingyang.(2019).Mechanical and thermal properties of RE4Hf3O12 (RE=Ho, Er, Tm) ceramics with defect fluorite structure.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,35(9),2064-2069.
MLA	Hu, Wanpeng,et al."Mechanical and thermal properties of RE4Hf3O12 (RE=Ho, Er, Tm) ceramics with defect fluorite structure".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 35.9(2019):2064-2069.