IMR OpenIR
High entropy ultra-high temperature ceramic thermal insulator (Zr1/5Hf1/5Nb1/5Ta1/5Ti1/5)C with controlled microstructure and outstanding properties
Shao, Zhuojie1,2; Wu, Zhen1; Sun, Luchao1; Liang, Xianpeng1,2; Luo, Zhaoping1; Chen, Haikun3; Li, Junning3; Wang, Jingyang1
Corresponding AuthorWu, Zhen(zwu@imr.ac.cn) ; Wang, Jingyang(jywang@imr.ac.cn)
2022-08-20
Source PublicationJOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN1005-0302
Volume119Pages:190-199
AbstractDue 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.
KeywordHigh entropy UHTCs High porosity High strength Low thermal conductivity Oxidation resistance
Funding OrganizationNational Key R&D Program of China ; LiaoNing Revitaliza-tion Talents Program
DOI10.1016/j.jmst.2021.12.030
Indexed BySCI
Language英语
Funding ProjectNational Key R&D Program of China[2017YFB0703201] ; LiaoNing Revitaliza-tion Talents Program[XLYC2002018]
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000788127200009
PublisherJOURNAL MATER SCI TECHNOL
Citation statistics
Cited Times:33[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/172618
Collection中国科学院金属研究所
Corresponding AuthorWu, Zhen; Wang, Jingyang
Affiliation1.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
Recommended Citation
GB/T 7714
Shao, Zhuojie,Wu, Zhen,Sun, Luchao,et al. High entropy ultra-high temperature ceramic thermal insulator (Zr1/5Hf1/5Nb1/5Ta1/5Ti1/5)C with controlled microstructure and outstanding properties[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2022,119:190-199.
APA Shao, Zhuojie.,Wu, Zhen.,Sun, Luchao.,Liang, Xianpeng.,Luo, Zhaoping.,...&Wang, Jingyang.(2022).High entropy ultra-high temperature ceramic thermal insulator (Zr1/5Hf1/5Nb1/5Ta1/5Ti1/5)C with controlled microstructure and outstanding properties.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,119,190-199.
MLA Shao, Zhuojie,et al."High entropy ultra-high temperature ceramic thermal insulator (Zr1/5Hf1/5Nb1/5Ta1/5Ti1/5)C with controlled microstructure and outstanding properties".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 119(2022):190-199.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Shao, Zhuojie]'s Articles
[Wu, Zhen]'s Articles
[Sun, Luchao]'s Articles
Baidu academic
Similar articles in Baidu academic
[Shao, Zhuojie]'s Articles
[Wu, Zhen]'s Articles
[Sun, Luchao]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Shao, Zhuojie]'s Articles
[Wu, Zhen]'s Articles
[Sun, Luchao]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.