摘要
采用束丝碳纤维和聚碳硅烷先驱体浸渍裂解工艺制成 Cf/ Si C丝束 ,并进行了分析表征 ,研究了其中的纤维受损情况。实验结果表明 ,由于先驱体聚碳硅烷在浸渍裂解时倾向于以纤维为依托进行热解 ,并且其中较多量的氧及杂质的存在将对纤维造成损伤 ,因而会形成较强的纤维基体界面 ;
In this paper, C f/SiC was prepared by the process of precursor infiltration pyrolysis(PIP) using carbon fiber bundles and polycarbosilane(PCS), and the damage extent of fibers in C f/SiC was studied. The results show that strongly bonded fiber/matrix interface will come into being because PCS is ready to pyrolyze surrounding the fibers, and the considerable oxygen and impurity hurts the fiber. At the same time, the thermal stress hurts the fiber greatly, which is caused by the imparity of the fiber matrix coefficients of thermal expansion and considerable bulk shrink in the process of pyrolysis.
出处
《复合材料学报》
EI
CAS
CSCD
北大核心
2001年第4期68-71,共4页
Acta Materiae Compositae Sinica
基金
国家国防预研项目 ( 12 .1.11.3)
