(Ho0.25Lu0.25Yb0.25Eu0.25)(2)SiO5 high-entropy ceramic with low thermal conductivity, tunable thermal expansion coefficient, and excellent resistance to CMAS corrosion
文献类型：期刊论文
| 作者 | Chen, Zhilin3; Tian, Zhilin3; Zheng, Liya3; Ming, Keyu3; Ren, Xiaomin1,2; Wang, Jingyang2; Li, Bin3 |
| 刊名 | JOURNAL OF ADVANCED CERAMICS
 |
| 出版日期 | 2022-06-15 |
| 页码 | 15 |
| ISSN号 | 2226-4108 |
| 关键词 | high-entropy ceramic environmental barrier coating (EBC) rare earth silicate thermal conductivity thermal expansion coefficient (TEC) |
| DOI | 10.1007/s40145-022-0609-z |
| 通讯作者 | Tian, Zhilin(tianzhlin@mail.sysu.edu.cn) ; Li, Bin(libin75@mail.sysu.edu.cn) |
| 英文摘要 | Low thermal conductivity, compatible thermal expansion coefficient, and good calcium-magnesium-aluminosilicate (CMAS) corrosion resistance are critical requirements of environmental barrier coatings for silicon-based ceramics. Rare earth silicates have been recognized as one of the most promising environmental barrier coating candidates for good water vapor corrosion resistance. However, the relatively high thermal conductivity and high thermal expansion coefficient limit the practical application. Inspired by the high entropy effect, a novel rare earth monosilicate solid solution (Ho0.25Lu0.25Yb0.25Eu0.25)(2)SiO5 was designed to improve the overall performance. The as-synthesized (Ho0.25Lu0.25Yb0.25Eu0.25)(2)SiO5 shows very low thermal conductivity (1.07 W.m(-1).K-1 at 600 degrees C). Point defects including mass mismatch and oxygen vacancies mainly contribute to the good thermal insulation properties. The thermal expansion coefficient of (Ho0.25Lu0.25Yb0.25Eu0.25)(2)SiO5 can be decreased to (4.0-5.9)x10(-6) K-1 due to severe lattice distortion and chemical bonding variation, which matches well with that of SiC ((4.5-5.5)x10(-6) K-1). In addition, (Ho0.25Lu0.25Yb0.25Eu0.25)(2)SiO5 presents good resistance to CMAS corrosion. The improved performance of (Ho0.25Lu0.25Yb0.25Eu0.25)(2)SiO5 highlights it as a promising environmental barrier coating candidate. |
| 资助项目 | Guangdong Basic and Applied Basic Research Foundation for Distinguished Young Scholars[2021B1515020083] ; Guang Dong Basic and Applied Basic Research Foundation for Young Scholars[21201910240002803] ; Shenzhen Science and Technology Program[GXWD20201231165807008] ; Shenzhen Science and Technology Program[20200831172254001] ; Fundamental Research Funds for the Central Universities, Sun Yat-sen University[2021qntd10] |
| WOS研究方向 | Materials Science |
| 语种 | 英语 |
| 出版者 | SPRINGER |
| WOS记录号 | WOS:000811954800002 |
| 资助机构 | Guangdong Basic and Applied Basic Research Foundation for Distinguished Young Scholars ; Guang Dong Basic and Applied Basic Research Foundation for Young Scholars ; Shenzhen Science and Technology Program ; Fundamental Research Funds for the Central Universities, Sun Yat-sen University |
| 源URL | [http://ir.imr.ac.cn/handle/321006/174446]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Tian, Zhilin; Li, Bin |
| 作者单位 | 1.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 3.Sun Yat Sen Univ, Sch Mat, Shenzhen Campus, Shenzhen 518107, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Zhilin,Tian, Zhilin,Zheng, Liya,et al. (Ho0.25Lu0.25Yb0.25Eu0.25)(2)SiO5 high-entropy ceramic with low thermal conductivity, tunable thermal expansion coefficient, and excellent resistance to CMAS corrosion[J]. JOURNAL OF ADVANCED CERAMICS,2022:15. |
| APA | Chen, Zhilin.,Tian, Zhilin.,Zheng, Liya.,Ming, Keyu.,Ren, Xiaomin.,...&Li, Bin.(2022).(Ho0.25Lu0.25Yb0.25Eu0.25)(2)SiO5 high-entropy ceramic with low thermal conductivity, tunable thermal expansion coefficient, and excellent resistance to CMAS corrosion.JOURNAL OF ADVANCED CERAMICS,15. |
| MLA | Chen, Zhilin,et al."(Ho0.25Lu0.25Yb0.25Eu0.25)(2)SiO5 high-entropy ceramic with low thermal conductivity, tunable thermal expansion coefficient, and excellent resistance to CMAS corrosion".JOURNAL OF ADVANCED CERAMICS (2022):15. |
入库方式： OAI收割
来源：金属研究所
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