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

文献类型：期刊论文

作者Wang, Haoyu1,2; Zhang, Jie2; Sun, Luchao2; Wang, Jingyang2
刊名SURFACE & COATINGS TECHNOLOGY
出版日期2022-05-15
卷号437页码:10
ISSN号0257-8972
关键词Environmental barrier coating Atmospheric plasma spray Ytterbium disilicate Phase evolution Transmission electron microscopy
DOI10.1016/j.surfcoat.2022.128373
通讯作者Zhang, Jie(jiezhang@imr.ac.cn)
英文摘要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.
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
语种英语
出版者ELSEVIER SCIENCE SA
WOS记录号WOS:000793343300005
资助机构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
源URL[http://ir.imr.ac.cn/handle/321006/173971]  
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.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 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.

入库方式： OAI收割

来源：金属研究所

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