期刊
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
卷 41, 期 4, 页码 2395-2399出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.jeurceramsoc.2020.11.017
关键词
Combustion synthesis; Porous Si(3)N(4)ceramic; Flexural strength; Linear shrinkage; Machinability
资金
- National Key Research and Development Program of China [2017YFB0310303]
- National Natural Science Foundation of China [51702331, 52072381, U1904217]
- Opening Project of State Key Laboratory of High Performance Ceramics and Superfine Microstructure [SKL201801SIC]
Porous beta-Si3N4 ceramics were successfully prepared by combustion synthesis, achieving high porosity, high flexural strength, and low linear shrinkage when the content of alpha-Si3N4 diluent in raw materials is equal to that of Si. The porous ceramics can also be drilled and turned using WC drill and turning tool.
Porous beta-Si3N4 ceramics were prepared by combustion synthesis using Si, alpha-Si3N4 and Y2O3 powders as raw materials. The effects of alpha-Si3N4 diluent content in pellet on nitriding rate, shrinkage, porosity and flexural strength of porous ceramics were investigated. The results show that porous beta-Si3N4 ceramic with porosity of 49 % and flexural strength of 151 MPa can be obtained by combustion synthesis when the content of alpha-Si3N4 diluent in raw materials is equal to that of Si, and the linear shrinkage of porous ceramic is only 2.8 %. In addition, the porous ceramic can be drilled and turned by WC drill and turning tool respectively.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据
分享论文
