典型文献
Texture and anisotropy of hot-pressed h-BN matrix composite ceramics with in situ formed YAG
文献摘要:
Textured hexagonal boron nitride(h-BN)matrix composite ceramics were prepared by hot-pressing using different contents of 3Y2O3-5Al2O3(molar ratio of 3:5)as the sintering additive.During hot-pressing,the liquid Y3Al5O12(YAG)phase showing good wettability to h-BN grains was in situ formed through the reaction between Y2O3 and Al2O3,and a coherent relationship between h-BN and YAG was observed with[010]h-BN//[111]YAG and(002)h-BN//(321)YAG.In the YAG liquid phase environment formed during hot-pressing,plate-like h-BN grains were rotated under the uniaxial sintering pressure and preferentially oriented with their basal surfaces perpendicular to the sintering pressure direction,forming textured microstructures with the c-axis of h-BN grains oriented parallel to the sintering pressure direction,which give these composite ceramics anisotropy in their mechanical and thermal properties.The highest texture degree was found in the specimen with 30 wt%YAG,which also possesses the highest anisotropy degree in thermal conductivity.The aggregation of YAG phase was observed in the specimen with 40 wt%YAG,which resulted in the buckling of h-BN plates and significantly reduced the texture degree.
文献关键词:
中图分类号:
作者姓名:
Zhuo ZHANG;Xiaoming DUAN;Zhuo TIAN;Yujin WANG;Lan WANG;Lei CHEN;Baofu QIU;Delong CAI;Peigang HE;Dechang JIA;Yu ZHOU
作者机构:
Key Laboratory of Advanced Structural-Functional Integration Materials&Green Manufacturing Technology,Harbin Institute of Technology,Harbin 150001,China;Institute for Advanced Ceramics,School of Materials Science and Engineering,Harbin Institute of Technology,Harbin 150001,China;State Key Laboratory of Advanced Welding and Joining,Harbin Institute of Technology,Harbin 150001,China;School of Electromechanical Engineering,Guangdong University of Technology,Guangzhou 510006,China
文献出处:
引用格式:
[1]Zhuo ZHANG;Xiaoming DUAN;Zhuo TIAN;Yujin WANG;Lan WANG;Lei CHEN;Baofu QIU;Delong CAI;Peigang HE;Dechang JIA;Yu ZHOU-.Texture and anisotropy of hot-pressed h-BN matrix composite ceramics with in situ formed YAG)[J].先进陶瓷(英文版),2022(04):532-544
A类:
3Y2O3,5Al2O3
B类:
anisotropy,hot,pressed,BN,matrix,composite,ceramics,situ,formed,YAG,Textured,hexagonal,boron,nitride,were,prepared,by,pressing,using,different,contents,molar,ratio,sintering,additive,During,liquid,Y3Al5O12,phase,showing,good,wettability,grains,was,through,reaction,between,coherent,relationship,observed,In,environment,during,like,rotated,under,uniaxial,pressure,preferentially,oriented,their,basal,surfaces,perpendicular,direction,forming,textured,microstructures,axis,parallel,which,give,these,mechanical,thermal,properties,highest,degree,found,specimen,wt,also,possesses,conductivity,aggregation,resulted,buckling,plates,significantly,reduced
AB值:
0.479679
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