Study on Microstructure of Continuous C<sub>f</sub>/Al Composite Material Prepared by Hot Pressing Diffusion Method

Two-dimensional carbon fiber fabric T300 used as reinforcement, C f /Al composite material was prepared by hot pressing diffusion. Effect of parameters on microstructure of C f /Al composite material was studied. We found that for aluminum foil used as matrix, hot pressing temperature is 650°C, hot pressing time is 20min, pressure is 30MPa. As a case, interfacial reaction product Al 4 C 3 accounts for 3.6%, and composite material density is 2.44g/cm 3 . For aluminum powder used as matrix, hot pressing temperature is 620°C, hot pressing time is 35min, pressure is 10MPa. As a case, Al 4 C 3 accounts for 2.8%, and composite material density is 2.58g/cm 3 . The molding of aluminum powder is much easier than that of aluminum foil. The latter requires higher hot pressing temperature. Interfacial reaction product Al 4 C 3 increases as increasing of hot pressing temperature and pressure.