Patent ID: 6231793
Filing Date: 2001-05-15
Classification: C04B

Abstract:
A method for fabricating a green state ceramic matrix composite article of manufacture for subsequent pyrolysis, the method comprising the steps of:a) mixing for mixture formation an amount of a polymer-derived ceramic precursor resin, an amount of a catalyst, discontinuous reinforcing fibers, and a filler material, wherein the amount of precursor resin is between about 50 and 85 volume percent of a theoretically required amount for producing a substantially non-porous green state ceramic matrix composite article of manufacture and wherein the amount of catalyst is between about 4 wt. % and 10 wt. % of the mixture;b) drying the mixture;c) preheating a mold having a shape of the article of manufacture to a cure temperature for curing the mixture to a porous green state ceramic matrix composite article of manufacture;d) placing the mixture into the mold for a period of time sufficient to cure said mixture to said porous green state ceramic matrix composite article of manufacture;e) ejecting said article of manufacture from the mold; andf) filling a plurality of pores of said porous green state ceramic matrix composite article of manufacture with said polymer-derived ceramic precursor resin.