硅酸盐学报2012，Vol.40Issue(3)：329-334,6.
短链两亲分子活性剂制备氮化硅泡沫陶瓷
Preparation of Si3N4 Foam Ceramics Using Short-Chain Amphiphile
摘要
Abstract
Si3N4 foam ceramics were prepared by a direct foaming method.The influences of long-chain surfactants and short-chain amphiphiles on the stability of the bubbles were investigated,and the microstructure of the sintered Si3N4 foam ceramics was ana-lyzed.The results indicate that the bubbles produced by long-chain surfactants appear unstable.In contrast,the bubbles produced by short-chain amphiphiles were stable,and the bubbles were spherical or oval shape.Si3N4 foam ceramics with the open-pore and closed-pore structures were obtained by controlling the process parameter of foaming,and the pore size distribution of Si3N4 foam ceramics was uniform.The porosity and flexural strength of Si3N4 foam ceramics with the closed pore structure were 40% and 106 MPa,and those with the open pore structure were 80% and 28 MPa,respectively.关键词
氮化硅/泡沫陶瓷/颗粒稳定泡沫/微观结构Key words
silicon nitride/foam ceramics/particle-stabilized foams/microstructure分类
化学化工引用本文复制引用
余娟丽,杨金龙,李和欣,黄勇..短链两亲分子活性剂制备氮化硅泡沫陶瓷[J].硅酸盐学报,2012,40(3):329-334,6.基金项目
国家高技术研究发展计划 （）
北京市科技计划（20101092117）资助项目 （）
