典型文献
High-entropy perovskite RETa3O9 ceramics for high-temperature environmental/thermal barrier coatings
文献摘要：
Four high-entropy perovskite(HEP)RETa3O9 samples were fabricated via a spark plasma sintering(SPS)method,and the corresponding thermophysical properties and underlying mechanisms were investigated for environmental/thermal barrier coating(E/TBC)applications.The prepared samples maintained low thermal conductivity(1.50 W·m-1·K-1),high hardness(10 GPa),and an appropriate Young's modulus(180 GPa),while the fracture toughness increased to 2.5 MPa m1/2.Nanoindentation results showed the HEP ceramics had excellent mechanical properties and good component homogeneity.We analysed the influence of different parameters(the disorder parameters of the electronegativity,ionic radius,and atomic mass,as well as the tolerance factor)of A-site atoms on the thermal conductivity.Enhanced thermal expansion coefficients,combined with a high melting point and extraordinary phase stability,expanded the applications of the HEP RETa3O9.The results of this study had motivated a follow-up study on tantalate high-entropy ceramics with desirable properties.
文献关键词：
中图分类号：
作者姓名：
Lin CHEN;Baihui LI;Jun GUO;Yuke ZHU;Jing FENG
作者机构：
Faculty of Material Science and Engineering,Kunming University of Science and Technology,Kunming 650093,China
文献出处：
引用格式：
[1]Lin CHEN;Baihui LI;Jun GUO;Yuke ZHU;Jing FENG-.High-entropy perovskite RETa3O9 ceramics for high-temperature environmental/thermal barrier coatings)[J].先进陶瓷（英文版）,2022(04):556-569
A类：
RETa3O9,tantalate
B类：
High,entropy,perovskite,ceramics,high,temperature,environmental,thermal,barrier,coatings,Four,HEP,samples,were,fabricated,via,spark,plasma,sintering,SPS,method,corresponding,thermophysical,properties,underlying,mechanisms,investigated,TBC,applications,prepared,maintained,conductivity,hardness,GPa,appropriate,Young,modulus,while,fracture,toughness,increased,m1,Nanoindentation,results,showed,had,excellent,mechanical,good,component,homogeneity,We,analysed,influence,different,parameters,disorder,electronegativity,ionic,radius,atomic,mass,well,tolerance,site,atoms,Enhanced,expansion,coefficients,combined,melting,point,extraordinary,phase,stability,expanded,this,study,motivated,follow,up,desirable
AB值：
0.609634
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。
