制备工艺对SiC_f/Si-O-C复合材料弯曲强度的影响  

Influence of process on the bending strength of SiC_f/Si-O-C composite

作　　者：范真祥[1] 程海峰[1] 张长瑞[1] 唐耿平[1] 王军[1] 

机构地区：[1]国防科学技术大学航天与材料工程学院国防科技重点实验室,湖南长沙410073

出　　处：《功能材料》2005年第7期1090-1092,共3页Journal of Functional Materials

摘　　要：以聚硅氧烷为先驱体,采用先驱体转化法制备SiCf/Si-O-C复合材料。研究制备工艺参数模压压力、裂解时升温制度、裂解温度、保温时间对材料的力学性能的影响。通过对复合材料微观结构的分析研究,发现界面结构与致密度是影响SiCf/Si-O-C复合材料性能的主要因素。In this paper, silicon carbide fiber reinforced siliconoxycarbide (Si-O-C) composites were fabricated via precursor infiltration and pyrolysis using polysiloxane. The process parameters such as molding pressure, heating rate, pyrolysizing temperature and holding time were studied. The influence of these parameters on the mechanical properties of the SiCf/Si-O-C composite was also analyzed. Microstructure and properties of SiCf/Si-O-C composites was discussed, the high properties were mainly attributed to ideal interfacial structure and density.

关 键 词：Si-O-C 聚硅氧烷 先驱体转化 陶瓷基复合 材料 弯曲强度 

分 类 号：TB323[一般工业技术—材料科学与工程]