Phase composition and property evolution of (Yb1-xHox)(2)Si2O7 solid solution as environmental/thermal barrier coating candidates

doi:10.1016/j.jeurceramsoc.2022.04.020

IMR OpenIR

	Phase composition and property evolution of (Yb1-xHox)(2)Si2O7 solid solution as environmental/thermal barrier coating candidates
	Lv, Xirui 1,2; Cui, Jingping 1; Zhang, Jie 1; Wang, Jingyang 1
通讯作者	Zhang, Jie(jiezhang@imr.ac.cn) ; Wang, Jingyang(jywang@imr.ac.cn)
	2022-08-01
发表期刊	JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
ISSN	0955-2219
卷号	42 期号:10 页码:4377-4387
摘要	RE disilicates are good candidates as environmental/thermal barrier coating for SiCf/SiC composite in harsh gas turbine engines. We designed (Yb1-xHox)(2)Si2O7 solid solutions and studied mechanical properties, thermal properties, and water vapor resistance. Powders with different compositions were synthesized by pressureless sintering, and bulk samples were prepared by Spark Plasma Sintering (SPS). Polymorphic changes with temperature and composition of the solid solutions were examined. Through doping Ho into Yb2Si2O7, water vapor corrosion resistance is significantly promoted, and thermal expansion coefficient is maintained close to that of Si based ceramics. Compared with host disilicates, thermal conductivity of solid solutions are decreased, and mechanical properties, including Vickers hardness and fracture toughness, are increased. A two-phase domain is found at (Yb1/2Ho1/2)(2)Si2O7, and the gamma to delta phase transition of Ho2Si2O7 is observed during SPS. Among all samples, gamma-(Yb1/3Ho2/3)(2)Si2O7 possesses superior high temperature stability, and excellent water vapor resistance, indicating its performance as environmental/thermal barrier coating.
关键词	RE disilicates Solid solution Phase evolution Property
资助者	National Science and Technology Major Project, China ; International Cooperation Key Program, China ; Key Research Program of the Chinese Academy of Sciences, China ; Natural Science Foundation of China ; Natural Science Foundation of Liaoning Province, China ; LiaoNing Revitalization Talents Program, China
DOI	10.1016/j.jeurceramsoc.2022.04.020
收录类别	SCI
语种	英语
资助项目	National Science and Technology Major Project, China[2017-VI-0020-0093] ; International Cooperation Key Program, China[174321KYSB20180008] ; Key Research Program of the Chinese Academy of Sciences, China[ZDRW-CN-2021-2-2] ; Natural Science Foundation of China[51772302] ; Natural Science Foundation of Liaoning Province, China[2020-MS-006] ; LiaoNing Revitalization Talents Program, China[XLYC2002018]
WOS研究方向	Materials Science
WOS类目	Materials Science, Ceramics
WOS记录号	WOS:000797940400001
出版者	ELSEVIER SCI LTD
引用统计	被引频次：11[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/321006/174279
专题	中国科学院金属研究所
通讯作者	Zhang, Jie; Wang, Jingyang
作者单位	1.Inst Met Sci & Technol, Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Shenyang, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang, Peoples R China
推荐引用方式 GB/T 7714	Lv, Xirui,Cui, Jingping,Zhang, Jie,et al. Phase composition and property evolution of (Yb1-xHox)(2)Si2O7 solid solution as environmental/thermal barrier coating candidates[J]. JOURNAL OF THE EUROPEAN CERAMIC SOCIETY,2022,42(10):4377-4387.
APA	Lv, Xirui,Cui, Jingping,Zhang, Jie,&Wang, Jingyang.(2022).Phase composition and property evolution of (Yb1-xHox)(2)Si2O7 solid solution as environmental/thermal barrier coating candidates.JOURNAL OF THE EUROPEAN CERAMIC SOCIETY,42(10),4377-4387.
MLA	Lv, Xirui,et al."Phase composition and property evolution of (Yb1-xHox)(2)Si2O7 solid solution as environmental/thermal barrier coating candidates".JOURNAL OF THE EUROPEAN CERAMIC SOCIETY 42.10(2022):4377-4387.