典型文献
High entropy ultra-high temperature ceramic thermal insulator(Zr1/5Hf1/5Nb1/5Ta1/5Ti1/5)C with controlled microstructure and outstanding properties
文献摘要：
Due to advancements of hypersonic vehicles,ultra-high temperature thermal insulation materials are ur-gently 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 tem-peratures.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 pow-ders.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.
文献关键词：
中图分类号：
作者姓名：
Zhuojie Shao;Zhen Wu;Luchao Sun;Xianpeng Liang;Zhaoping Luo;Haikun Chen;Junning Li;Jingyang Wang
作者机构：
Shenyang National Laboratory for Materials Science,Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,China;School of Materials Science and Engineering,University of Science and Technology of China,Hefei 230026,China;Science and Technology on Advanced Functional Composites Laboratory,Aerospace Research Institute of Materials and Processing Technology,Beijing 100076,China
文献出处：
引用格式：
[1]Zhuojie Shao;Zhen Wu;Luchao Sun;Xianpeng Liang;Zhaoping Luo;Haikun Chen;Junning Li;Jingyang Wang-.High entropy ultra-high temperature ceramic thermal insulator(Zr1/5Hf1/5Nb1/5Ta1/5Ti1/5)C with controlled microstructure and outstanding properties)[J].材料科学技术（英文版）,2022(24):190-199
A类：
5Hf1,5Nb1,5Ta1,UHTCs
B类：
High,entropy,ultra,temperature,thermal,insulator,Zr1,5Ti1,controlled,microstructure,outstanding,properties,Due,advancements,hypersonic,vehicles,insulation,materials,gently,requested,shield,harsh,environment,superhigh,heat,flux,Toward,this,target,ceramics,only,choice,due,their,excellent,capability,peratures,We,herein,report,novel,highly,porous,fabricated,by,foam,gelcasting,freeze,drying,technology,combined,situ,pressureless,reaction,sintering,exhibited,porosity,well,strength,low,conductivity,respectively,Specifically,SiC,additive,locates,pit,surface,neck,between,grains,there,secondary,phase,intergranular,film,boundary,Besides,oxidation,resistance,carbide,powders,greatly,improved,compared,that,mixed,five,This,work,clearly,highlights,merits
AB值：
0.504259
相似文献
机标中图分类号，由域田数据科技根据网络公开资料自动分析生成，仅供学习研究参考。
