| Phase composition and property evolution of (Yb1-xHox)(2)Si2O7 solid solution as environmental/thermal barrier coating candidates | |
| Lv, Xirui1,2; Cui, Jingping1; Zhang, Jie1; Wang, Jingyang1 | |
| Corresponding Author | Zhang, Jie(jiezhang@imr.ac.cn) ; Wang, Jingyang(jywang@imr.ac.cn) |
| 2022-08-01 | |
| Source Publication | JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
 |
| ISSN | 0955-2219 |
| Volume | 42Issue:10Pages:4377-4387 |
| Abstract | 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. |
| Keyword | RE disilicates Solid solution Phase evolution Property |
| Funding Organization | 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 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | 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 Research Area | Materials Science |
| WOS Subject | Materials Science, Ceramics |
| WOS ID | WOS:000797940400001 |
| Publisher | ELSEVIER SCI LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/174279 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Zhang, Jie; Wang, Jingyang |
| Affiliation | 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 |
| Recommended Citation 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. |
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