High porosity and low thermal conductivity high entropy (Zr0.2Hf0.2Ti0.2Nb0.2Ta0.2)C
Chen, Heng1,2; Xiang, Huimin1; Dai, Fu-Zhi1; Liu, Jiachen2; Lei, Yiming3; Zhang, Jie3; Zhou, Yanchun1,2
Corresponding AuthorZhou, Yanchun(
AbstractPorous 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.
KeywordUltrahigh temperature ceramics (UHTCs) High entropy ceramics (Zr0.2Hf0.2Ti0.2 Nb0.2Ta0.2)C Thermal conductivity Porosity
Funding OrganizationNational Natural Science Foundation of China ; Beijing Municipal Science & Technology Commission
Indexed BySCI
Funding ProjectNational Natural Science Foundation of China[U1435206] ; National Natural Science Foundation of China[51672064] ; Beijing Municipal Science & Technology Commission[D161100002416001]
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000470677300022
Citation statistics
Cited Times:45[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorZhou, Yanchun
Affiliation1.Aerosp Res Inst Mat & Proc Technol, Sci & Technol Adv Funct Composite Lab, Beijing 100076, Peoples R China
2.Tianjin Univ, Sch Mat Sci & Engn, Minist Educ, Key Lab Adv Ceram & Machining Technol, Tianjin 300072, Peoples R China
3.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China
Recommended Citation
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.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Chen, Heng]'s Articles
[Xiang, Huimin]'s Articles
[Dai, Fu-Zhi]'s Articles
Baidu academic
Similar articles in Baidu academic
[Chen, Heng]'s Articles
[Xiang, Huimin]'s Articles
[Dai, Fu-Zhi]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Chen, Heng]'s Articles
[Xiang, Huimin]'s Articles
[Dai, Fu-Zhi]'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.