Porous high-entropy (Zr0.25Hf0.25Nb0.25Ti0.25)C with high strength and uniform pore structure fabricated by freeze-casting
文献类型：期刊论文
| 作者 | Zeng, Dawei1,2; Zhou, Jiaxin1,2; Wu, Zhen1; Sun, Luchao1; Wang, Jingyang1 |
| 刊名 | JOURNAL OF MATERIALS SCIENCE
 |
| 出版日期 | 2024-06-01 |
| 卷号 | 59期号:22页码:9941-9951 |
| ISSN号 | 0022-2461 |
| DOI | 10.1007/s10853-024-09456-0 |
| 通讯作者 | Wu, Zhen(zwu@imr.ac.cn) ; Wang, Jingyang(jywang@imr.ac.cn) |
| 英文摘要 | Ultra-high temperature ceramics (UHTCs) are considered as promising thermal insulation materials applied in ultra-high temperature environments (>2000 degrees C). However, the high thermal conductivity and high density limit their further development and application. Herein we adopt the strategies of introducing porous structure and high-entropy effect to solve the above problems. Thus porous high-entropy (Zr0.25Hf0.25Nb0.25Ti0.25)C ceramics were prepared. In order to obtain the uniform pore structure and high mechanical property, the camphene-based freeze-casting method was used in this study. The as-prepared porous samples exhibit high porosity of 92.01-73.57% and homogeneously interconnected pore structure with average pore size of 40.8-19.6 mu m. Besides, this work realizes the aims of lightweight (0.65-2.15 g/cm(3)) and low thermal conductivity (0.29-1.53 W/(m.K)). More importantly, porous samples still have the merit of high compressive strength (0.38-29.02 MPa) due to the even microstructure. The results show that highly porous high-entropy (Zr0.25Hf0.25Nb0.25Ti0.25)C with good overall properties can be an excellent candidate material for ultra-high temperature thermal insulation. |
| 资助项目 | National Natural Science Foundation of China[U21A2063] ; National Natural Science Foundation of China[52372071] ; National Key R&D Program of China[2021YFB3702300] ; LiaoNing Revitalization Talents Program[XLYC2002018] ; Natural Science Foundation of Liaoning Province[2022-MS-007] |
| WOS研究方向 | Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:001376964600016 |
| 出版者 | SPRINGER |
| 资助机构 | National Natural Science Foundation of China ; National Key R&D Program of China ; LiaoNing Revitalization Talents Program ; Natural Science Foundation of Liaoning Province |
| 源URL |  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Wu, Zhen; Wang, Jingyang |
| 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, Hefei 230026, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zeng, Dawei,Zhou, Jiaxin,Wu, Zhen,et al. Porous high-entropy (Zr0.25Hf0.25Nb0.25Ti0.25)C with high strength and uniform pore structure fabricated by freeze-casting[J]. JOURNAL OF MATERIALS SCIENCE,2024,59(22):9941-9951. |
| APA | Zeng, Dawei,Zhou, Jiaxin,Wu, Zhen,Sun, Luchao,&Wang, Jingyang.(2024).Porous high-entropy (Zr0.25Hf0.25Nb0.25Ti0.25)C with high strength and uniform pore structure fabricated by freeze-casting.JOURNAL OF MATERIALS SCIENCE,59(22),9941-9951. |
| MLA | Zeng, Dawei,et al."Porous high-entropy (Zr0.25Hf0.25Nb0.25Ti0.25)C with high strength and uniform pore structure fabricated by freeze-casting".JOURNAL OF MATERIALS SCIENCE 59.22(2024):9941-9951. |
入库方式： OAI收割
来源：金属研究所
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