摘要
以富碳低分子聚碳硅烷(LPS)为原料,利用其原料的特点,采用气相反应热裂解方法制备出Si-C-N复合微粉.系统地讨论了合成工艺条件对采用富碳有机硅原料制备含N的Si-C-N复合微粉产物的性质以及形貌、组成,尤其是微粉中N含量等的影响,并较详细地探讨了NH3与LPS分解反应的过程及与LPS制备SiC微粉的反应过程的差别.所合成的无定形Si-C-N复合微粉:粒径30—50nm,球形,含碳(质量分数,下同)10%—30%,含氮4%—20%左右.
Using low_molecular polysilane (LPS) as raw material, which is carbon_rich and oxygen_containing, Si-C-N ultrafine composite powder was synthesized by vapor reaction decomposition. The effects of the processing conditions on chemical content, especially N content in the powder, particle morphology were mainly investigated. The reaction process and mechanism of LPS and NH 3 and the difference of these two materials in the production of SiC powder was researched. The obtained Si-C-N ultrafine composite powder has particle size 30—50nm, spherical in shape, amorphous state, containing C 10%—30%(in mass), N 4%—20%(in mass).
出处
《硅酸盐学报》
EI
CAS
CSCD
北大核心
1998年第5期668-673,共6页
Journal of The Chinese Ceramic Society
基金
国防预研基金
关键词
低分子
聚碳硅烷
复合超细微粉
陶瓷
复合陶瓷
low_molecular polysilane, vapor reaction decomposition, silicon/carbon/nitrogen, composite ultrafine powders