SiC含量对ZTA和ATZ复相陶瓷力学及热学性能的影响

查看全文 作　　者：Chai [1,2]Jianlong;Guo [1,2]Yawei;Zhu [1]Yabin;Li [1,2]Shufeng;Shen [1]Tielong;Yao [1]Cunfeng;Cui [1]Minghuan;Wang [1]Zhiguang 机构地区：[1]Institute of Modern Physics,Chinese Academy of Sciences,Lanzhou 730070,China;[2]University of Chinese Academy of Sciences,Beijing 100049,China 出　　处：《IMP & HIRFL Annual Report》索引2018年第1期,共2页 摘　　要：Oxide/carbide composite ceramics were prepared by spark plasma sintering(SPS)usingα-Al2O3,ZrO2andβ-SiC powders as raw materials.The effects of SiC doping on the microstructure,mechanical and thermal properties of zirconia toughened alumina(ZTA)and alumina toughened zirconia(ATZ)based composites were investigated.Fig.1 shows the effect of SiC content on the mechanical properties of the complex phase ceramics.With the increase of SiC content,the bending strength of SiC-ATZ80mol%composite phase ceramics decreased from 992 to 761 MPa.The reason is that the thermal expansion mismatch between the SiC and the substrate induces thermal stress,resulting in the different shrinkage between the substrate and the SiC affecting its strength. 关 键 词：CERAMICS COMPOSITE CARBIDE