结合化学气相渗透工艺(chemical vapor infiltration)与前驱体浸渍裂解(precursor infiltration and pyrolysis,PIP)工艺,制备了C/C–Zr B_2–Si C复合材料,并对材料的力学性能和烧蚀性能进行了分析。结果表明:PIP工艺制备的C/C–Zr B_2–Si C复合材料的拉伸、弯曲及剪切强度分别为91.2、214和35.8 MPa,优于通过浆料浸渍工艺制备的复合材料。同时,热流3 200 k W/m~2,时间600 s的氧乙炔火焰试验表明,PIP工艺制备的C/C–Zr B_2–Si C复合材料具有良好的抗氧化烧蚀性能,其线烧蚀率和质量烧蚀率分别为0.002 mm/s和0.7 mg/s。 The C / C-Zr B 2 -SiC composite was prepared by chemical vapor infiltration and precursor infiltration and pyrolysis (PIP) process. The mechanical and ablative properties of the composites were also studied. Analysis. The results show that the tensile, flexural and shear strengths of C / C-Zr B 2 -SiC composites prepared by PIP are 91.2, 214 and 35.8 MPa, respectively, which are better than that of composites prepared by slurry impregnation. At the same time, the flame test of oxyacetylene with a heat flux of 3 200 k W / m 2 and a time of 600 s shows that the C / C-Zr B 2 -SiC composite prepared by PIP process has good anti-oxidation ablation performance, Rate and mass ablation rates were 0.002 mm / s and 0.7 mg / s, respectively.