| Microstructure and phase composition evolution of dual-phase ytterbium silicate coatings plasma sprayed from stoichiometric Yb2Si2O7 feedstock powder | |
| Wang, Haoyu1,2; Zhang, Jie1; Sun, Luchao1; Wang, Jingyang1 | |
| Corresponding Author | Zhang, Jie(jiezhang@imr.ac.cn) |
| 2022-05-15 | |
| Source Publication | SURFACE & COATINGS TECHNOLOGY
 |
| ISSN | 0257-8972 |
| Volume | 437Pages:10 |
| Abstract | 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. |
| Keyword | Environmental barrier coating Atmospheric plasma spray Ytterbium disilicate Phase evolution Transmission electron microscopy |
| Funding Organization | 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 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | 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 Research Area | Materials Science ; Physics |
| WOS Subject | Materials Science, Coatings & Films ; Physics, Applied |
| WOS ID | WOS:000793343300005 |
| Publisher | ELSEVIER SCIENCE SA |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/173972 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Zhang, Jie |
| Affiliation | 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 |
| Recommended Citation 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. |
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