典型文献
Rare-earth-niobate high-entropy ceramic foams with enhanced thermal insulation performance
文献摘要：
The introduction of porous structures into high-entropy ceramics is expected to further improve its ther-mal insulation performance.In this work,a series of novel rare-earth-niobate high-entropy ceramic foams((Dy0.2Ho0.2Y0.2Er0.2Yb0.2)3NbO7)with hierarchical pore structures were prepared by a particle-stabilized foaming method.Atomic-scale analysis reveals that high entropy causes atom displacement and lattice distortion.The high-entropy ceramic foams exhibit high porosity(90.13％-96.13％)and ultralow thermal conductivity(0.0343-0.0592 W/(m.K))at room temperature.High-entropy ceramic foam prepared by a 20 wt％slurry sintered at 1500℃has the porosity of 96.12％and extremely low thermal conductivity of 0.0343 W/(m·K).The existence of walls and secondary pores contributes to reduced thermal conductivity.There is a temperature difference of over 800℃between frontside and backside of the sample under fire resistance test.The research indicates that these as-prepared high-entropy ceramic foams are expected to be promising thermal insulation materials.
文献关键词：
中图分类号：
作者姓名：
R.W.Yang;Y.P.Liang;J.Xu;X.Y.Meng;J.T.Zhu;S.Y.Cao;M.Y.Wei;R.X.Zhang;J.L.Yang;F.Gao
作者机构：
State Key Laboratory of Solidification Processing,MIIT Key Laboratory of Radiation Detection Materials and Devices,School of Materials Science and Engineering,Northwestern Polytechnical University,Xi'an,710072,China;NPU-QMUL Joint Research Institute of Advanced Materials and Structure,Northwestern Polytechnical University,Xi'an,710072,China;State Key Laboratory of New Ceramics and Fine Processing,School of Materials Science and Engineering,Tsinghua University,Beijing,100084,China;State Key Laboratory of Materials Processing and Die&Mould Technology,School of Materials Science and Engineering,Huazhong University of Science and Technology,Wuhan,430074,China
文献出处：
引用格式：
[1]R.W.Yang;Y.P.Liang;J.Xu;X.Y.Meng;J.T.Zhu;S.Y.Cao;M.Y.Wei;R.X.Zhang;J.L.Yang;F.Gao-.Rare-earth-niobate high-entropy ceramic foams with enhanced thermal insulation performance)[J].材料科学技术（英文版）,2022(21):94-102
A类：
2Ho0,3NbO7,frontside,backside
B类：
Rare,earth,niobate,high,entropy,foams,enhanced,thermal,insulation,performance,introduction,porous,structures,into,ceramics,expected,further,improve,its,In,this,work,series,novel,rare,Dy0,2Y0,2Er0,2Yb0,hierarchical,were,prepared,by,particle,stabilized,foaming,method,Atomic,scale,analysis,reveals,that,causes,atom,displacement,lattice,distortion,exhibit,porosity,ultralow,conductivity,room,temperature,High,wt,slurry,sintered,has,extremely,existence,walls,secondary,pores,contributes,reduced,There,difference,over,between,sample,under,fire,resistance,test,research,indicates,these,promising,materials
AB值：
0.541193
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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。
