中文摘要：

采用含高化学活性基团的乙烯基三氯硅烷（CH2=CHSiCl3）和双（三甲基硅基）碳化二亚胺[Me3Si-N=C=N-SiMe3（BTSC）]作前驱体，在室温的氩气氛下于甲苯中进行缩合化学反应，形成稳定透明SiCN溶胶体系，溶胶经过陈化，形成三维空间结构的SiCN凝胶，最后在高温条件下裂解形成SiCN陶瓷。结果表明干凝胶在800℃时裂解为致密的无定型SiCN陶瓷，并在1400℃析晶出棒状。α-Si3N4，陶瓷产率为68％（质量分数，下同）。

英文摘要：

Vinyltrichlorosilane CH 2=CHSiC13 reacted with bis（trimethylsilyl）carbodiimide Me3Si-N=C=N-SiMe3（BTSC） in toluene in argon atmosphere, to form transparent non-oxide SiCN sols system at room temperature. The SiCN sols were deposited to transit highly cross-linked and stable non-oxide SiCN gel. Then the SiCN xerogel was annealed at high temperature in argon atmosphere. The results showed that the xerogel can be pyrolyzed to an amorphous SiCN-ceramic at 800 ℃, and the clubbed silicon nitride α-Si3N4 can be observed at 1400 ℃, and the ceramic yield is 65 wt%.