C/C-SiC复合材料两种制备工艺及材料性能  

Two Kinds of Preparation Technologies and Properties of C/C-SiC Ceramic Composites

作　　者：朱耘玑[1] 邱海鹏[1] 孙明[1] 李秀倩[1] 罗京华[1] 

机构地区：[1]北京航空制造工程研究所

出　　处：《航空制造技术》2009年第S1期118-121,共4页Aeronautical Manufacturing Technology

摘　　要：以碳纤维整体毡为预制体,采用化学气相渗透法(CVI)制备出低密度碳/碳复合材料,再分别采用液相硅渗透工艺(LSI)制备出密度为2.1g/cm3的碳/碳-碳化硅复合材料(C/C-SiC),及先驱体转化工艺(PIP)制备出密度为1.9g/cm3的C/C-SiC。对2种工艺制备的C/C-SiC力学性能进行了比较,结果表明:PIP工艺制备的C/C-SiC弯曲强度为287MPa,明显高于LSI工艺制备的弯曲强度155MPa。The C/C composites of low density are fabricated by chemical vapor infiltration(CVI) with integral carbon felts with carbon fiber as prefab.On the basis of the low density C/C composites,the C/C-SiC composites with the density of 2.1g/cm3 are prepared by liquid silicon infiltration(LSI),and the C/C-SiC composites with the of density 1.9g/cm3 are prepared by precursor infiltration and pyrolysis(PIP).The result shows that bend strength of the C/C-SiC composites prepared by PIP is 287MPa,which is better than that of 155MPa of the composites prepared by LSI.

关 键 词：C/C-SIC 液相硅渗透工艺 先驱体转化工艺 化学气相渗透工艺 

分 类 号：TB332[一般工业技术—材料科学与工程]