Microstructure and phase composition evolution of dual-phase ytterbium silicate coatings plasma sprayed from stoichiometric Yb2Si2O7 feedstock powder

doi:10.1016/j.surfcoat.2022.128373

IMR OpenIR

	Microstructure and phase composition evolution of dual-phase ytterbium silicate coatings plasma sprayed from stoichiometric Yb2Si2O7 feedstock powder
	Wang, Haoyu 1,2; Zhang, Jie 1; Sun, Luchao 1; Wang, Jingyang 1
通讯作者	Zhang, Jie(jiezhang@imr.ac.cn)
	2022-05-15
发表期刊	SURFACE & COATINGS TECHNOLOGY
ISSN	0257-8972
卷号	437 页码:10
摘要	The main challenges of atmospheric plasma spraying (APS) when dealing with rare earth silicate are the amorphous phase formation and silica volatilization in as-sprayed coatings. In this study, the microstructure and phase composition evolution of dual-phase ytterbium silicate environmental barrier coatings (EBCs) plasma sprayed from stoichiometric Yb2Si2O7 feedstock powder are investigated. The unavoidable silica volatilization leads to the coating composition deviate from stoichiometry of disilicate composition and result in the presence of Yb2SiO5 in coatings. By controlling the phase fraction of Yb2SiO5 through modulation of plasma character allows minimizing the effects of thermal residual stress on the coating durability in thermal cycling. The high crystallinity and crack-free coatings were achieved through optimized crystallization heat treatment. The presence of dislocation and deformation twins endow the dual-phase coating with intrinsic quasi plasticity and improvement in reliability. The present study provides useful inspirations on the optimization of spraying parameters and design of advanced EBC systems.
关键词	Environmental barrier coating Atmospheric plasma spray Ytterbium disilicate Phase evolution Transmission electron microscopy
资助者	National Science and Technology Major Project ; International Cooperation Key Program ; Key Research Program of the Chinese Academy of Sciences ; Natural Science Foundation of China ; Nat-ural Science Foundation of Liaoning Province ; LiaoNing Revitalization Talents Program
DOI	10.1016/j.surfcoat.2022.128373
收录类别	SCI
语种	英语
资助项目	National Science and Technology Major Project[2017-VI-0020-0093] ; International Cooperation Key Program[174321KYSB20180008] ; Key Research Program of the Chinese Academy of Sciences[ZDRW-CN-2021-2-2] ; Natural Science Foundation of China[51772302] ; Nat-ural Science Foundation of Liaoning Province[2020-MS-006] ; LiaoNing Revitalization Talents Program[XLYC2002018]
WOS研究方向	Materials Science ; Physics
WOS类目	Materials Science, Coatings & Films ; Physics, Applied
WOS记录号	WOS:000793343300005
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：19[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/321006/173972
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, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Wang, Haoyu,Zhang, Jie,Sun, Luchao,et al. Microstructure and phase composition evolution of dual-phase ytterbium silicate coatings plasma sprayed from stoichiometric Yb2Si2O7 feedstock powder[J]. SURFACE & COATINGS TECHNOLOGY,2022,437:10.
APA	Wang, Haoyu,Zhang, Jie,Sun, Luchao,&Wang, Jingyang.(2022).Microstructure and phase composition evolution of dual-phase ytterbium silicate coatings plasma sprayed from stoichiometric Yb2Si2O7 feedstock powder.SURFACE & COATINGS TECHNOLOGY,437,10.
MLA	Wang, Haoyu,et al."Microstructure and phase composition evolution of dual-phase ytterbium silicate coatings plasma sprayed from stoichiometric Yb2Si2O7 feedstock powder".SURFACE & COATINGS TECHNOLOGY 437(2022):10.