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材料工程  2007 

先驱体转化Cf/SiC复合材料微观结构与渗透性能研究

, PP. 24-27

Keywords: Cf/SiC复合材料,多孔,气泡法,渗透性,编织方式

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Abstract:

采用气泡法和扫描电镜(SEM)研究了先驱体浸渍-裂解(PIP)工艺制备三维编织和2.5D-Cf/SiC复合材料的内部结构及渗透性能.结果表明,材料内部孔隙率为10%~20%,孔尺寸从几百微米到不足1μm不等,平均贯通孔径小于10μm;碳纤维编织方式是影响复合材料孔结构、贯通孔尺寸分布及渗透性的重要因素,材料渗透系数与平均贯通孔径呈正比,与孔隙率无直接联系.

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