通过合理的制备工艺制得一种新型既耐烧蚀又能防热的复合材料 -炭 /炭 / Al2 O3陶瓷基复合材料。预制件整体炭毡先通过热梯度气相沉积 ( CVD)处理 ,然后经反复的真空 -压力浸渍 Al2 O3型无机胶 ,再通过 50 0℃烧结制得。得到的材料轴向压缩强度大于 60 MPa,材料外部导热系数为 1 .73 0 W/ ( m·K) ( 80 0℃ ) ,内表面线烧蚀率为 0 .0 1 2 mm/ s Through a reasonable preparation process, a new type of composite material which is both ablative and heat-resistant is obtained - carbon / carbon / Al 2 O 3 ceramic matrix composites. The whole prefabricated carbon felt is firstly processed by thermal gradient vapor deposition (CVD) and then infiltrated with Al 2 O 3 type inorganic glue through repeated vacuum-pressure and then sintered at 50 ° C. The obtained material has an axial compressive strength of more than 60 MPa, an external thermal conductivity of 1.73 0 W / (m · K) (80 ° C) and an inner surface ablation rate of 0.012 mm / s