典型文献
(Ho0.25Lu0.25Yb0.25Eu0.25)2SiO5 high-entropy ceramic with low thermal conductivity,tunable thermal expansion coefficient,and excellent resistance to CMAS corrosion
文献摘要：
Low thermal conductivity,compatible thermal expansion coefficient,and good calcium-magnesium-aluminosilicate(CMAS)corrosion resistance are critical requirements of environmental barrier coatings for silicon-based ceramics.Rare earth silicates have been recognized as one of the most promising environmental barrier coating candidates for good water vapor corrosion resistance.However,the relatively high thermal conductivity and high thermal expansion coefficient limit the practical application.Inspired by the high entropy effect,a novel rare earth monosilicate solid solution(Ho0.25Lu0.25Yb0.25Eu0.25)2SiO5 was designed to improve the overall performance.The as-synthesized(Ho0.25Lu0.25Yb0.25Eu0.25)2SiO5 shows very low thermal conductivity(1.07 W·m-1·K-1 at 600℃).Point defects including mass mismatch and oxygen vacancies mainly contribute to the good thermal insulation properties.The thermal expansion coefficient of(Ho0.25Lu0.25Yb0.25Eu0.25)2SiO5 can be decreased to(4.0-5.9)×10-6 K-1 due to severe lattice distortion and chemical bonding variation,which matches well with that of SiC((4.5-5.5)×10-6 K-1).In addition,(Ho0.25Lu0.25Yb0.25Eu0.25)2SiO5 presents good resistance to CMAS corrosion.The improved performance of(Ho0.25Lu0.25Yb0.25Eu0.25)2SiO5 highlights it as a promising environmental barrier coating candidate.
文献关键词：
中图分类号：
作者姓名：
Zhilin CHEN;Zhilin TIAN;Liya ZHENG;Keyu MING;Xiaomin REN;Jingyang WANG;Bin LI
作者机构：
School of Materials,Shenzhen Campus of Sun Yat-sen University,Shenzhen 518107,China;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
文献出处：
引用格式：
[1]Zhilin CHEN;Zhilin TIAN;Liya ZHENG;Keyu MING;Xiaomin REN;Jingyang WANG;Bin LI-.(Ho0.25Lu0.25Yb0.25Eu0.25)2SiO5 high-entropy ceramic with low thermal conductivity,tunable thermal expansion coefficient,and excellent resistance to CMAS corrosion)[J].先进陶瓷（英文版）,2022(08):1279-1293
A类：
Ho0,25Lu0,25Yb0,25Eu0,2SiO5,monosilicate
B类：
entropy,low,thermal,conductivity,tunable,expansion,coefficient,excellent,resistance,CMAS,corrosion,Low,compatible,good,calcium,magnesium,aluminosilicate,critical,requirements,environmental,barrier,coatings,silicon,ceramics,Rare,earth,silicates,have,been,recognized,one,most,promising,candidates,water,vapor,However,relatively,limit,practical,application,Inspired,by,effect,novel,rare,solid,solution,was,designed,overall,performance,synthesized,shows,very,Point,defects,including,mass,mismatch,oxygen,vacancies,mainly,contribute,insulation,properties,decreased,due,severe,lattice,distortion,chemical,bonding,variation,which,matches,well,that,SiC,addition,presents,improved,highlights
AB值：
0.388328
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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。
