Patent ID: 6576076
Filing Date: 2003-06-10
Classification: C04B

Abstract:
A process for producing a fiber-reinforced silicon carbide composite, said process comprising the steps of:laminating first fiber prepregs containing resin and second fiber prepregs containing silicon powder and resin, in alternate order; molding the laminate into a desired shape to yield a green body; carbonizing the green body at a temperature in the range of about 900Â° C. to about 1350Â° C. in an inert atmosphere to yield a carbonized composite; subjecting the carbonized composite to reaction sintering at a temperature of about 1300Â° C. or higher in vacuo or in an inert atmosphere to form open pores in a fiber region containing silicon powder; and infiltrating molten silicon into the open pores of the sintered composite at a temperature in the range of about 1300Â° C. to about 1800Â° C. in vacuo or in an inert atmosphere.