典型文献
High-entropy rare-earth zirconate ceramics with low thermal conductivity for advanced thermal-barrier coatings
文献摘要：
The high-entropy rare-earth zirconate((La0.2Nd0.2Sm0.2Gd0.2Yb0.2)2Zr2O7,5RE2Zr2O7 HE-REZs)ceramics were successfully prepared by a new high-speed positive grinding strategy combined with solid-state reaction method.The microstructure,crystal structure,phase composition,and thermophysical and mechanical properties of the samples were systematically investigated through various methods.Results indicate that the samples have a single-phase defect fluorite-type crystal structure with excellent high-temperature thermal stability.The as-prepared samples also demonstrate low thermal conductivity(0.9-1.72 W·m-1·K-1 at 273-1273 K)and high coefficient of thermal expansion(CTE,10.9×10-6 K-1 at 1273 K),as well as outstanding mechanical properties including large Young's modulus(E=186-257 GPa)and high fracture toughness(KIC).Furthermore,the formation possibility of the as-prepared samples was verified through the first-principles calculations,which suggested the feasibility to form the 5RE2Zr2O7 HE-REZs in the thermodynamic direction.Therefore,in view of the excellent multifunctional properties exhibited by the as-prepared 5RE2Zr2O7 HE-REZs,they have great potential applications in next-generation thermal-barrier coatings(TBCs).
文献关键词：
中图分类号：
作者姓名：
Debao LIU;Baolu SHI;Liyan GENG;Yiguang WANG;Baosheng XU;Yanfei CHEN
作者机构：
Institute of Advanced Structure Technology,Beijing Institute of Technology,Beijing 100081,China;Shanghai Space Propulsion Technology Research Institute,Shanghai 201109,China
文献出处：
引用格式：
[1]Debao LIU;Baolu SHI;Liyan GENG;Yiguang WANG;Baosheng XU;Yanfei CHEN-.High-entropy rare-earth zirconate ceramics with low thermal conductivity for advanced thermal-barrier coatings)[J].先进陶瓷（英文版）,2022(06):961-973
A类：
2Nd0,5RE2Zr2O7,REZs
B类：
High,entropy,rare,earth,zirconate,ceramics,low,thermal,conductivity,advanced,barrier,coatings,high,La0,2Sm0,2Gd0,2Yb0,HE,were,successfully,prepared,by,new,speed,positive,grinding,strategy,combined,solid,state,reaction,microstructure,crystal,phase,composition,thermophysical,mechanical,properties,samples,systematically,investigated,through,various,methods,Results,indicate,that,have,single,defect,fluorite,type,excellent,temperature,stability,also,demonstrate,coefficient,expansion,CTE,well,outstanding,including,large,Young,modulus,GPa,fracture,toughness,KIC,Furthermore,formation,possibility,was,verified,first,principles,calculations,which,suggested,feasibility,thermodynamic,direction,Therefore,view,multifunctional,exhibited,they,great,potential,applications,next,generation,TBCs
AB值：
0.569558
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