| 引用本文: | 范真祥,程海峰,张长瑞,等.不同裂解温度对制备SiCf/Si-O-C复合材料性能研究.[J].国防科技大学学报,2004,26(5):13-17.[点击复制] |
| FAN Zhenxiang,CHENG Haifeng,ZHANG Changrui,et al.Fabrication of Silicon Carbide Fiber Reinforced Si-O-C Composites by Different Pyrolysizing Temperature[J].Journal of National University of Defense Technology,2004,26(5):13-17[点击复制] |
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| 不同裂解温度对制备SiCf/Si-O-C复合材料性能研究 |
| 范真祥, 程海峰, 张长瑞, 唐耿平 |
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(国防科技大学 航天与材料工程学院，湖南 长沙 410073)
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| 摘要: |
| 以聚硅氧烷为先驱体，研究先驱体转化过程中在不同的裂解温度下对制备SiCf/Si-O-C复合材料性能影响。结果表明，当裂解温度在700℃、800℃时，陶瓷基复合材料的弯曲强度分别为255.2 MPa、309.0 MPa；当裂解温度在1000℃时，陶瓷基复合材料的弯曲强度为45.3 MPa。对SiCf/Si-O-C复合材料的微观结构及载荷—位移曲线进行分析，发现界面结构是影响SiCf/Si-O-C复合材料性能的主要因素。 |
| 关键词: Si-O-C 聚硅氧烷 先驱体转化 陶瓷基复合材料 裂解温度 弯曲强度 |
| DOI： |
| 投稿日期：2004-06-30 |
| 基金项目: |
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| Fabrication of Silicon Carbide Fiber Reinforced Si-O-C Composites by Different Pyrolysizing Temperature |
| FAN Zhenxiang, CHENG Haifeng, ZHANG Changrui, TANG Gengping |
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(College of Aerospace and Materials Engineering, National Univ. of Defense Technology, Changsha 410073, China)
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| Abstract: |
| Silicon carbide fiber reinforced silicon oxycarbide(Si-O-C) composites are fabricated via precursor infiltration and pyrolysis using polysiloxane . The results show that bending strength of ceramic matrix composite are 255.2 MPa、309.0 MPa at pyrolysizing temperature 700℃、800℃, and 45.3 MPa at pyrolysizing temperature 1000℃. Microstructure、properties and load/displacement curves of SiCf/Si-O-C composites are studied and discussed.The high properties are mainly attributed to the ideal interfacial structure. |
| Keywords: silicon oxycarbide polysiloxane precursor infiltration and pyrolysis ceramic matrix composite pyrolysizing temperature bending strength |
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