High porosity and low thermal conductivity high entropy (Zr0.2Hf0.2Ti0.2Nb0.2Ta0.2)C
文献类型：期刊论文
| 作者 | Chen, Heng2,3; Xiang, Huimin2; Dai, Fu-Zhi2; Liu, Jiachen3; Lei, Yiming1; Zhang, Jie1; Zhou, Yanchun2,3 |
| 刊名 | JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
 |
| 出版日期 | 2019-08-01 |
| 卷号 | 35期号:8页码:1700-1705 |
| 关键词 | Ultrahigh temperature ceramics (UHTCs) High entropy ceramics (Zr0.2Hf0.2Ti0.2 Nb0.2Ta0.2)C Thermal conductivity Porosity |
| ISSN号 | 1005-0302 |
| DOI | 10.1016/j.jmst.2019.04.006 |
| 通讯作者 | Zhou, Yanchun(yczhou@imr.ac.cn) |
| 英文摘要 | Porous ultra-high temperature ceramics (UHTCs) are promising for ultrahigh-temperature thermal insulation applications. However, the main limitations for their applications are the high thermal conductivity and densification of porous structure at high temperatures. In order to overcome these obstacles, herein, porous high entropy (Zr0.2Hf0.2Ti0.2Nb0.2 Ta-0.2)C was prepared by a simple method combing in-situ reaction and partial sintering. Porous high entropy (Zr0.2Hf0.2Ti0.2Nb0.2Ta0.2)C possesses homogeneous microstructure with grain size in the range of 100-500 nm and pore size in the range of 0.2-1 mu m, which exhibits high porosity of 80.99%, high compressive strength of 3.45 MPa, low room temperature thermal conductivity of 0.39 W.m(-1) K-1, low thermal diffusivity of 0.74 mm(2).s(-1) and good high temperature stability. The combination of these properties renders porous high entropy (Zr0.2Hf0.2Ti0.2Nb0.2Ta0.2)C promising as light-weight ultrahigh temperature thermal insulation materials. (C) 2019 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology. |
| 资助项目 | National Natural Science Foundation of China[U1435206] ; National Natural Science Foundation of China[51672064] ; Beijing Municipal Science & Technology Commission[D161100002416001] |
| WOS研究方向 | Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000470677300022 |
| 出版者 | JOURNAL MATER SCI TECHNOL |
| 资助机构 | National Natural Science Foundation of China ; Beijing Municipal Science & Technology Commission |
| 源URL | [http://ir.imr.ac.cn/handle/321006/133771]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Zhou, Yanchun |
| 作者单位 | 1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China 2.Aerosp Res Inst Mat & Proc Technol, Sci & Technol Adv Funct Composite Lab, Beijing 100076, Peoples R China 3.Tianjin Univ, Sch Mat Sci & Engn, Minist Educ, Key Lab Adv Ceram & Machining Technol, Tianjin 300072, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Heng,Xiang, Huimin,Dai, Fu-Zhi,et al. High porosity and low thermal conductivity high entropy (Zr0.2Hf0.2Ti0.2Nb0.2Ta0.2)C[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2019,35(8):1700-1705. |
| APA | Chen, Heng.,Xiang, Huimin.,Dai, Fu-Zhi.,Liu, Jiachen.,Lei, Yiming.,...&Zhou, Yanchun.(2019).High porosity and low thermal conductivity high entropy (Zr0.2Hf0.2Ti0.2Nb0.2Ta0.2)C.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,35(8),1700-1705. |
| MLA | Chen, Heng,et al."High porosity and low thermal conductivity high entropy (Zr0.2Hf0.2Ti0.2Nb0.2Ta0.2)C".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 35.8(2019):1700-1705. |
入库方式： OAI收割
来源：金属研究所
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