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

doi:10.1016/j.jmst.2019.04.025

CORC > 金属研究所 > 中国科学院金属研究所

	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
刊名	JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
	2019-09-01
卷号	35 期号:9 页码:2064-2069
关键词	Rare earth hafnate Thermal/environmental barrier coating Mechanical property Thermal property
ISSN号	1005-0302
DOI	10.1016/j.jmst.2019.04.025
通讯作者	Zhang, Jie(jiezhang@imr.ac.cn)
英文摘要	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.
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
语种	英语
出版者	JOURNAL MATER SCI TECHNOL
WOS记录号	WOS:000475870600033
资助机构	National Key R&D Program of China ; National Natural Science Foundation of China ; International Cooperation Key Program
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/134625]
专题	金属研究所_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.