铬粉在裂解聚碳硅烷制备陶瓷材料中的应用  

Application of Cr Powder on Fabrication of Multiphase Ceramics by PCS Pyrolysis

作　　者：周长江[1] 魏红[1] 赵卫权[1] 陈朝辉[2] 

机构地区：[1]第二军医大学药学院,上海200433 [2]国防科技大学材料工程与应用化学系,长沙410073

出　　处：《高技术通讯》2001年第4期91-93,共3页Chinese High Technology Letters

基　　金：国家自然科学基金!资助项目 ( 5 9682 0 0 9)

摘　　要：研究了Cr粉在以聚碳硅烷 (PCS)为先驱体裂解制备SiC陶瓷材料中的应用。结果表明 ,Cr在较低的温度下减慢PCS的裂解反应 ,在较高的温度下则加剧PCS的裂解 ,且能增加先驱体的陶瓷产率 ,降低先驱体在裂解过程中的线性收缩率和气孔率 ,提高陶瓷材料性能。SiC ceramics derived by Cr /PCS mixtures pyrolysis in N 2 or Ar gas atmosphere was studied. The results showed that Cr can alleviate PCS pyrolysis in lower temperature, but accelerate PCS pyrolysis in higher temperature. The ceramic yields of PCS are increased, and the linear shrinkage of the preceramic polymers in pyrolysising and porosity of ceramic products decrease with the addition of Cr powders, therefor enhancing the properties of the ceramic materials.

关 键 词：铬粉 聚碳硅烷 先驱体 裂解 碳化硅陶瓷 制备 

分 类 号：TQ174[化学工程—陶瓷工业]