不同助烧结剂及造孔剂对SiC多孔陶瓷的影响  

EFFECTS OF DIFFERENT SINTERING AIDS AND PORE FORMERS ON POROUS SiC CERAMICS

作　　者：尚俊玲[1] 陈维平[1] 刘城[1] 李元元[1] 

机构地区：[1]华南理工大学机械工程学院,广州510641

出　　处：《中国陶瓷工业》2007年第2期29-31,23,共4页China Ceramic Industry

基　　金：国家高技术研究发展计划(863计划)资助项目(编号:2003AA305420);中国博士后自然科学基金(编号:2005037581)

摘　　要：采用真空烧结方法制备了SiC多孔陶瓷,研究了不同助烧结剂Al2O3-Y2O3、Si以及不同造孔剂丙烯酰胺聚合物、羧甲基纤维素(CMC)对SiC多孔陶瓷形貌和气孔率的影响。结果表明:与Si相比较,Al2O3-Y2O3更有利于促进SiC的烧结;以Al2O3-Y2O3为助烧结剂的试样比以Si为助烧结剂的试样具有较高的气孔率。The porous SiC ceramics were prepared by vacuum sintering in this investigation, the effect of different sintering aids, Al2O3-Y2O3 and Si, and different pore formers, acrylamide copolymer and Carboxymethyl Cellulose （CMC） on the microstructures and porosity were studied. The results show that Al2O3-Y2O3 promotes the sintering of SiC more than Si. And porous SiC ceramics used Al2O3-Y2O3 as sintering aid possesses higher porosity compared with porous SiC ceramics with Si as sintering aid.

关 键 词：助烧结剂 造孔剂 SIC多孔陶瓷 气孔率 

分 类 号：TQ174.75[化学工程—陶瓷工业]