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Ceramic Matrix Composites through Polymer Impregnation Pyrolysis
Carbon fibre (Cf) reinforced ceramic matrix composites (CMCs) are attractive for various applications due to low density, high specific strength, and good wear/erosion/oxidation resistance. It is established that the CMCs can be made through the reactive polymer impregnation and pyrolysis method. The mixing of required ceramic powders and polymer (precursor for ceramic) in liquid media. The powder mixture was stacking in between the required size of Cf layer. The vacuum curing of samples. The pyrolysis of samples in a graphite furnace under vacuum and argon/nitrogen atmosphere. The re-infiltration of polymer precursor and pyrolysis results reach to the required density. The number of infiltration, pyrolysis temperature & time for making CMCs has been established. This method is suitable for making near net- complicated shapes by economic way compared to the available techniques.
