High entropy ultra-high temperature ceramic thermal insulator (Zr1/5Hf1/5Nb1/5Ta1/5Ti1/5)C with controlled microstructure and outstanding properties

被引：37
作者：
Shao, Zhuojie [1 ,2 ]
Wu, Zhen [1 ]
Sun, Luchao [1 ]
Liang, Xianpeng [1 ,2 ]
Luo, Zhaoping [1 ]
Chen, Haikun [3 ]
Li, Junning [3 ]
Wang, Jingyang [1 ]
机构：
[1] Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China
[2] Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Peoples R China
[3] Aerosp Res Inst Mat & Proc Technol, Sci & Technol Adv Funct Composites Lab, Beijing 100076, Peoples R China
来源：
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY | 2022年 / 119卷
基金：
国家重点研发计划;
关键词：
High entropy UHTCs; High porosity; High strength; Low thermal conductivity; Oxidation resistance; MECHANICAL-PROPERTIES; HIGH-POROSITY; CARBIDE; CONDUCTIVITY; BEHAVIOR; RESISTANCE; MULLITE; FOAM; HFC;
D O I：
10.1016/j.jmst.2021.12.030
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Due to advancements of hypersonic vehicles, ultra-high temperature thermal insulation materials are urgently requested to shield harsh environment with superhigh heat flux. Toward this target, ultra-high temperature ceramics (UHTCs) are the only choice due to their excellent capability at ultra-high temperatures. We herein report a novel highly porous high entropy (Zr1/5Hf1/5Nb1/5Ta1/5Ti1/5)C fabricated by foam-gelcasting-freeze drying technology combined with in-situ pressureless reaction sintering. The porous (Zr1/5Hf1/5Nb1/5Ta1/5Ti1/5)C exhibited ultra-high porosity of 86.4%-95.9%, as well as high strength and low thermal conductivity of 0.70-11.77 MPa and 0.164-0.239 W/(m.K), respectively. Specifically, SiC sintering additive only locates at the pit of the surface of sintering neck between UHTC grains, and there is no secondary phase or intergranular film at the grain boundary. Besides, the oxidation resistance of high entropy carbide powders is greatly improved compared with that of the mixed five carbide powders. This work clearly highlights the merits of highly porous high entropy (Zr1/5Hf1/5Nb1/5Ta1/5Ti1/5)C as an ultra-high temperature thermal insulation material. (C) 2022 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
引用
收藏
页码：190 / 199
页数：10
相关论文
共 49 条
[1]   Densification improvement of spark plasma sintered TiB2-based composites with micron-, submicron- and nano-sized SiC particulates [J].
Ahmadi, Zohre ;
Nayebi, Behzad ;
Asl, Mehdi Shahedi ;
Farahbakhsh, Iman ;
Balak, Zohre .
CERAMICS INTERNATIONAL, 2018, 44 (10) :11431-11437
[2]   High porosity and low thermal conductivity high entropy (Zr0.2Hf0.2Ti0.2Nb0.2Ta0.2)C [J].
Chen, Heng ;
Xiang, Huimin ;
Dai, Fu-Zhi ;
Liu, Jiachen ;
Lei, Yiming ;
Zhang, Jie ;
Zhou, Yanchun .
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY, 2019, 35 (08) :1700-1705
[3]   Microstructure of (Hf-Ta-Zr-Nb)C high-entropy carbide at micro and nano/atomic level [J].
Dusza, Jan ;
Svec, Peter ;
Girman, Vladimir ;
Sedlak, Richard ;
Castle, Elinor G. ;
Csanadi, Tamas ;
Kovalcikova, Alexandra ;
Reece, Michael J. .
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2018, 38 (12) :4303-4307
[4]   Synthesis of single-phase high-entropy carbide powders [J].
Feng, Lun ;
Fahrenholtz, William G. ;
Hilmas, Gregory E. ;
Zhou, Yue .
SCRIPTA MATERIALIA, 2019, 162 :90-93
[5]   Synthesis of zirconium oxycarbide (ZrCxOy) powders: Influence of stoichiometry on densification kinetics during spark plasma sintering and on mechanical properties [J].
Gendre, Mathieu ;
Maitre, Alexandre ;
Trolliard, Gilles .
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2011, 31 (13) :2377-2385
[6]   Spark plasma sintering of TaC-HfC UHTC via disilicides sintering aids [J].
Ghaffari, S. A. ;
Faghihi-Sani, M. A. ;
Golestani-Fard, F. ;
Mandal, H. .
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2013, 33 (08) :1479-1484
[7]   Thermal conductivity of highly porous mullite materials [J].
Gong, Lunlun ;
Wang, Yonghong ;
Cheng, Xudong ;
Zhang, Ruifang ;
Zhang, Heping .
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 2013, 67 :253-259
[8]   THEORY OF BONDING IN TRANSITION-METAL CARBIDES AND NITRIDES [J].
HAGLUND, J ;
GUILLERMET, AF ;
GRIMVALL, G ;
KORLING, M .
PHYSICAL REVIEW B, 1993, 48 (16) :11685-11691
[9]   Phase stability and mechanical properties of novel high entropy transition metal carbides [J].
Harrington, Tyler J. ;
Gild, Joshua ;
Sarker, Pranab ;
Toher, Cormac ;
Rost, Christina M. ;
Dippo, Olivia F. ;
McElfresh, Cameron ;
Kaufmann, Kevin ;
Marin, Eduardo ;
Borowski, Lucas ;
Hopkins, Patrick E. ;
Luo, Jian ;
Curtarolo, Stefano ;
Brenner, Donald W. ;
Vecchio, Kenneth S. .
ACTA MATERIALIA, 2019, 166 :271-280
[10]   Core-rim structure, bi-solubility and a hierarchical phase relationship in hot-pressed ZrB2-SiC-MC ceramics (M=Nb, Hf, Ta, W) [J].
Hu, Dong-Li ;
Gu, Hui ;
Zou, Ji ;
Zheng, Qiang ;
Zhang, Guo-Jun .
JOURNAL OF MATERIOMICS, 2021, 7 (01) :69-79
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