| SiC微粉含量对2D-SiC_f/SiC复合材料力学性能影响 |
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| 引用本文： | 刘海韬,程海峰,王军,唐耿平,周旺,郑文伟.SiC微粉含量对2D-SiC_f/SiC复合材料力学性能影响[J].稀有金属材料与工程,2009,38(Z2). |
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| 作者姓名： | 刘海韬 程海峰 王军 唐耿平 周旺 郑文伟 |
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| 作者单位： | 国防科技大学,新型陶瓷纤维及其复合材料国防科技重点实验室,湖南,长沙,410073 |
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| 基金项目： | 总装预研项目，海军预研项目 |
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| 摘 要： | 对PIP法制备2D-SiC_f/SiC复合材料成形浆料中惰性填料SiC含量对2D-SiC_f/SiC复合材料孔隙率、纤维体积分数以及力学性能影响进行研究.研究表明,SiC微粉含量较低时,浆料粘度过低,导致层间存在较大气孔,纤维体积分数不高,致使复合材料力学性能不佳,当SiC微粉含量过高时,浆料粘度过大,层间基体厚度增加,纤维体积分数下降,并且浸渍效率降低,孔隙率增大,复合材料力学性能下降.当SiC微粉含量为33.3%时,复合材料具有较低的孔隙率和较高的纤维体积分数,复合材料具有较好的力学性能,弯曲强度和断裂韧性分别达到211.7 MPa和8.56 MPa·m~(1/2).
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| 关 键 词： | PIP工艺 SiC微粉 力学性能 |
Effects of the SiC Powder Contents on the Mechanical Properties of the 2D-SiC_f/SiC Composites Fabricated Via Precursor Infiltration Pyrolysis Process |
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| Liu Haitao,Cheng Haifeng,Wang Jun,Tang Gengping,Zhou Wang,Zheng Wenwei.Effects of the SiC Powder Contents on the Mechanical Properties of the 2D-SiC_f/SiC Composites Fabricated Via Precursor Infiltration Pyrolysis Process[J].Rare Metal Materials and Engineering,2009,38(Z2). |
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| Authors: | Liu Haitao Cheng Haifeng Wang Jun Tang Gengping Zhou Wang Zheng Wenwei |
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| Affiliation: | Liu Haitao,Cheng Haifeng,Wang Jun,Tang Gengping,Zhou Wang,Zheng Wenwei (Key Lab of Advanced Ceramic Fiber , Composites,College of Aerospace , Materials Engineering,National University of Defense Technology,Changsha 410073,China) |
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| Abstract: | The 2D-SiCf/SiC composites were fabricated by the PIP process. The effects of the SiC powder contents in the molding slurry on the porosity,fiber volume fraction and the mechanical properties of the SiCf/SiC composites were investigated. The results show that the lower content of the SiC powder will lead to the low slurry viscosity,and the high porosity and low fiber volume fraction in composites,which is disadvantage to the mechanical properties of the SiCf/SiC composites. Contrariy,the higher content of t... |
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| Keywords: | 2D-SiC_f/SiC precursor infiltration pyrolysis SiC powder 2D-SiC_f/SiC composites mechanical properties |
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