采用化学气相渗透法制备了在厚度方向上具有纤维增强的三维针刺碳纤维增强碳化硅(C/SiC)陶瓷基复合材料,复合材料的密度和气孔率分别为2.15g/cm~3和16%。三维针刺C/SiC复合材料中的针刺纤维将各层紧密结合在一起,其层间抗剪切强度显著提高,为95MPa,比二维碳布叠层C/SiC复合材料的剪切强度(35MPa)高171.4%。三维针刺C/SiC复合材料的拉伸强度和弯曲强度分别为159MPa和350MPa,断裂模式为非脆性断裂,包括:裂纹扩展、偏转,碳纤维的拉伸断裂和逐步拔出。 The three-dimensional acupuncture carbon fiber reinforced silicon carbide (C / SiC) ceramic matrix composite with fiber reinforcement in the thickness direction was prepared by chemical vapor infiltration method. The density and porosity of the composites were 2.15g / cm ~ 3 and 16% . The needle punched fibers in the three-dimensional needle-punched C / SiC composites tightly bonded the layers, and the interlaminar shear strength increased significantly, which was 95 MPa, which was higher than that of the two-dimensional carbon cloth laminated C / SiC composites (35MPa) high 171.4%. The tensile strength and flexural strength of the three-dimensional needle-punched C / SiC composites are 159MPa and 350MPa, respectively. The fracture mode is non-brittle fracture, including crack propagation, deflection, tensile fracture of carbon fiber and gradual pull-out.