C/C Composites Fabricated by the Chemical Liquid Phase Vaporization Densification with the Catalyst

This paper reported on an improved technique of the chemical liquid phase vaporization densification process for C/C composites preparation, based on the calefaction with the impulse inductive of the preform that was from the felt impregnated with the liquid phase pitch followed by carbonization. The pyrocarbon was yielded and deposited by the pyrolysis of the kerosene as the precursor at 800-1000℃ with ferrocene as the catalyst, and the density of the preform was increased from 0.3g/cm3 to 1.5-1.7g/cm3 in 3h. The relationship between the densification and the condition of the reaction process, the microstructures of the pyrocarbon and the function of the catalyst were examined by a metallography microscope.