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研究了不同工艺条件下具有 SiC-Ni 双涂层的碳纤维增强 Al 基复合材料的界面反应、界面结构及其对复合材料力学性能的影响,分析了不同界面条件下复合材料的典型破坏过程。实验表明:以 SiC 涂层作为界面反应阻挡层,可有效地阻止纤维与基体的反应,保证 C/Al 复合材料在界面反应很严重的情况下仍能保持较高的强度水平。初步提出了这种复合材料保持较高强度的原因和断裂机制。
The interfacial reaction and interfacial structure of carbon fiber reinforced Al matrix composites with SiC-Ni double coating under different technological conditions and their effects on the mechanical properties of composites were investigated. The typical failure process of composites with different interfacial conditions was analyzed. Experiments show that the SiC coating acts as an interface reaction barrier, which can effectively prevent the fiber from reacting with the matrix and ensure that the C / Al composite material can still maintain a high strength level under the severe interface reaction. The reasons for the higher strength of the composite material and the fracture mechanism are initially proposed.