Porous Si_3N_4 Ceramics Prepared by TBA-based Gel-casting  

作　　者：Liuyuan Li Hongjie Wang Shaochang Su 

机构地区：[1]China Aviation Powerplant Research Institute [2]State Key Laboratory for Mechanical Behavior of Materials, School of Materials Science and Engineering, Xi'an Jiaotong University

出　　处：《Journal of Materials Science & Technology》2015年第3期295-299,共5页材料科学技术（英文版）

基　　金：supported by the National Natural Science Foundation of China (No. 90816018);Program of Shaanxi Bureau of Foreign Expert Affairs (No. 2011-32)

摘　　要：In this work, the effects of ratio of monomer to cross-linker(AM/MBAM) and solid loading on the microstructure and mechanical properties of porous Si3N4 ceramics prepared by tert-butyl alcohol(TBA)-based gel-casting process were investigated. It was found that, when the ratio of monomer to crosslinker was 8, and the solid loading was 50 wt%, the mechanical properties of sintered samples were the most excellent, which resulted from the uniform pore size distribution and well-grown rod-like bSi3N4 grains. In that case, the porosity and flexural strength of sintered samples were 50% and 125 MPa,respectively.In this work, the effects of ratio of monomer to cross-linker(AM/MBAM) and solid loading on the microstructure and mechanical properties of porous Si3N4 ceramics prepared by tert-butyl alcohol(TBA)-based gel-casting process were investigated. It was found that, when the ratio of monomer to crosslinker was 8, and the solid loading was 50 wt%, the mechanical properties of sintered samples were the most excellent, which resulted from the uniform pore size distribution and well-grown rod-like bSi3N4 grains. In that case, the porosity and flexural strength of sintered samples were 50% and 125 MPa,respectively.

关 键 词：Ratio of monomer to cross-linker Solid loading Por 

分 类 号：TQ174.6[化学工程—陶瓷工业]