Method for manufacturing ceramic matrix composite structures

摘要

Methods are disclosed herein to fabricate high-strength ceramic matrix composite (CMC) structures by combining, in one example, pre-impregnated (prepreg) material with a pre-ceramic polymer. The prepreg is processed to a first density, and the densification is completed with repeated polymer infiltration and pyrolysis (PIP) cycles of the pre-ceramic polymer to fabricate a CMC structure. Advantageously, the present invention allows for fabrication of ceramic matrix composites more efficiently and to a larger scale than previously available.

主权项

1. A method of fabricating a ceramic matrix composite structure, comprising:
laying-up a carbon/carbon (C/C) pre-impregnated (prepreg) fabric on a tool; curing the C/C prepreg fabric to provide a cured material consisting of resin char and carbon black; adding carbon nano-structures to the resin char; carbonizing the cured material to provide a carbonized reinforcement part; applying a pre-ceramic polymer to the carbonized reinforcement part; and pyrolyzing the applied pre-ceramic polymer to fabricate a ceramic matrix composite structure.