Patent ID: 6121169
Filing Date: 2000-09-19
Classification: C04B,Y10T

Abstract:
A ceramic matrix composite comprising a fibrous substrate and a porous interfacial coating surrounding each fiber of said fibrous substrate, said ceramic matrix composite derived by: (a) desizing said fibrous substrate, (b) immersing said desized fibrous substrate in a coating solution, said coating solution comprising resin and ceramic precursor having carbon particulate and dissolved directly within a solvent, (c) evaporating said solvent and curing said resin to produce a polymeric interfacial coating around each fiber of said fibrous substrate, (d) pyrolyzing said polymeric coating, (e) combining said fibrous substrate having said ceramic coating with a ceramic matrix material to produce a ceramic matrix composite system, and (f) removing by oxidation said carbon particulate by oxidizing said ceramic matrix composite system to thereby form respective pores in place of said particulate in said interfacial coating.