低成本聚硅氧烷制备SiC_f／Si-O-C材料性能研究  

Study of Properties of Silicon Carbide Fiber Reinfoced Si-O-C Composites Using Low Cost Polysiloxane

作　　者：范真祥[1] 程海峰[1] 张长瑞[1] 唐耿平[1] 楚增勇[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,长沙410073

出　　处：《航空材料学报》2006年第2期52-56,共5页Journal of Aeronautical 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,同时测试所得复合材料的弯曲强度、韧性、剪切强度、密度、热膨胀系数、导热系数、耐烧蚀性能。结果表明,SiCf／Si-O—C复合材料具有良好的综合性能。对所得材料微观结构进行分析讨论,发现界面结构与致密度是SiCf／Si-O-C复合材料具有高性能的主要原因。Silicon carbide fiber reinforced siliconoxycarbide(Si-O-C) composites were fabricated via precursor infiltration and pyrolysis using polysiloxane. Flexural strength, tensile strengths, shear strength, dentsity, thermal expansion coefficient, thermal conduction coefficient, ablative properties of SiCf/Si-O-C composites were tested . The results indicated that SiCf/Si-O-C composites had fairly excellent properties. Microstructure and properties of SiCf/Si-O-C composites was discussed, the high properties were...

关 键 词：Si-O-C 聚硅氧烷 先驱体转化 陶瓷基复合材料 烧蚀性能 

分 类 号：TB322[一般工业技术—材料科学与工程]