Optimization in the multi-cycle densification technology for manufacturing of the high density carbon fiber reinforced carbon

Abstract

Carbon fiber reinforced carbons (CFRC) are used to work in extreme environments because of their erosion resistance, ablative ability, and high mechanical characteristics at extremely high temperatures. The production of such materials includes several cycles of gas-phase or liquid-phase densification of initially porous carbon fibers reinforcement. The paper analyzes the main process parameters and densification routes, and their role in the manufacture of CFRC with high performance. A method for calculating changes in the density and porosity of CFRC during a multi-cycle densification has been developed. The results of the experiments confirmed the adequacy of this method.