活性填料钼在聚碳硅烷转化陶瓷中的应用  

Application of Molybdenum in the Preparation of Polycarbosilane Derived Ceramics

作　　者：谢征芳[1] 陈朝辉[1] 李永清[1] 郑文伟[1] 胡海峰[1] 肖加余[1] 

机构地区：[1]国防科技大学航天与材料工程学院,长沙410073

出　　处：《高技术通讯》2000年第12期67-70,共4页Chinese High Technology Letters

基　　金：国家自然科学基金资助项目!(5 96 82 0 0 9)

摘　　要：研究了活性填料钼 (Mo)在聚碳硅烷 (PCS)先驱体转化陶瓷中的应用。研究表明 ,活性填料Mo能有效降低陶瓷素坯的气孔率。Mo可与PCS气态裂解碳氢产物、游离碳和N2气氛反应生成新的化合物 ,可明显提高PCS的陶瓷产率。当Mo/PCS为 2 5% (vol)时 ,坯体的陶瓷产率为 10 0 %。The application of molybdenum(Mo) in the preparation of polycarbosilane (PCS) derived ceramics was investigated. The results showed that the Mo decreased the porosity of the green compact and, since Mo could react with the gas volatile of PCS during pyrolysis and/or free carbon to produce carbide and N 2 to produce nitride, increase the ceramic yield of PCS. The ceramic yield would be 100% when the volume ratio of Mo/PCS was 25%(vol).

关 键 词：活性填料 钼 聚碳硅烷 陶瓷 先驱体转化法 

分 类 号：TQ174[化学工程—陶瓷工业]