Preparation and characterization of porous Si3N4 ceramics prepared by compression molding and slip casting methods

被引：20
|
作者：
Yu Fangli [1 ]
Wang Huanrui [1 ]
Bai Yu [1 ]
Yang Jianfeng [1 ]
机构：
[1] Xi An Jiao Tong Univ, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China
来源：
BULLETIN OF MATERIALS SCIENCE | 2010年 / 33卷 / 05期
基金：
中国国家自然科学基金;
关键词：
Porous Si3N4 ceramics; preparation; microstructure; mechanical properties; gas permeability; SILICON-NITRIDE CERAMICS; MECHANICAL-PROPERTIES; ALUMINA CERAMICS; GAS-PERMEABILITY; MICROSTRUCTURE; STRENGTH; POROSITY; FABRICATION; ADDITIVES; PORES;
D O I：
10.1007/s12034-010-0094-9
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Porous silicon nitride (Si3N4) ceramics were fabricated by compression molding and slip casting methods using petroleum coke as pore forming agent, and Y2O3-Al2O3 as sintering additives. Microstructure, mechanical properties and gas permeability of porous Si3N4 ceramics were investigated. The mechanical properties and microstructure of porous Si3N4 ceramics prepared by compression molding were better than those which were prepared by slip casting method, whereas slip casting method is suitable for the preparation of porous Si3N4 ceramics with higher porosity and excellent gas permeability.
引用
收藏
页码：619 / 624
页数：6
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