典型文献
Calcium-magnesium-alumina-silicate(CMAS)resistant high entropy ceramic(Y0.2Gd0.2Er0.2Yb0.2Lu0.2)2Zr2O7 for thermal barrier coatings
文献摘要:
A novel high-entropy material,(Y0.2Gd0.2Er0.2Yb0.2Lu0.2)2Zr2O7 was successfully synthesized by the solid state reaction method and spark plasma sintering,and investigated as a promising thermal barrier coating material.Rare-earth elements were distributed homogeneously in the pyrochlore structure.It was found that the prepared high-entropy ceramic maintains pyrochlore structure at the temperature up to 1600℃,and it possesses a similar thermal expansion coefficient(10.2×10-6 K-1 at 25-900℃)to that of YSZ,low thermal conductivity(<0.9 W m-1 K-1 at 100-1000℃)and good CMAS resistance(infiltration depth is 22 μm after annealed at 1300℃for 24 h).The corrosion process was investigated,and RE elements distributing homogeneously in(Y0.2Gd0.2Er0.2Yb0.2 Lu0.2)2Zr2O7 show different diffusion rates in CMAS.RE3+with a larger radius(closer to Ca2+)is easier to react with CMAS to form an apatite phase.
文献关键词:
中图分类号:
作者姓名:
Shuxiang Deng;Gang He;Zengchao Yang;Jingxia Wang;Jiangtao Li;Lei Jiang
作者机构:
Key Laboratory of Cryogenics,Technical Institute of Physics and Chemistry,Chinese Academy of Sciences,Beijing 100190,China;Center of Materials Science and Optoelectronics Engineering,University of the Chinese Academy of Sciences,Beijing 100049,China;Key Laboratory of Bio-Inspired Materials and Interface Sciences,Technical Institute of Physics and Chemistry,Chinese Academy of Sciences,Beijing 100190,China
文献出处:
引用格式:
[1]Shuxiang Deng;Gang He;Zengchao Yang;Jingxia Wang;Jiangtao Li;Lei Jiang-.Calcium-magnesium-alumina-silicate(CMAS)resistant high entropy ceramic(Y0.2Gd0.2Er0.2Yb0.2Lu0.2)2Zr2O7 for thermal barrier coatings)[J].材料科学技术(英文版),2022(12):259-265
A类:
RE3+with
B类:
Calcium,magnesium,alumina,silicate,CMAS,resistant,high,entropy,ceramic,Y0,2Gd0,2Er0,2Yb0,2Lu0,2Zr2O7,thermal,barrier,coatings,novel,material,was,successfully,synthesized,by,solid,state,reaction,method,spark,plasma,sintering,investigated,promising,Rare,earth,elements,were,distributed,homogeneously,pyrochlore,structure,It,found,that,prepared,maintains,temperature,up,possesses,similar,expansion,coefficient,YSZ,low,conductivity,good,resistance,infiltration,depth,after,annealed,corrosion,process,distributing,show,different,diffusion,rates,larger,radius,closer,Ca2+,easier,form,apatite,phase
AB值:
0.554011
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