Method for producing ceramic matrix composites
AssigneeCOI Ceramics, Inc.
InventorDaniel Ralph Petrak
Life of this patent
Estimating the term…
Abstract
A method for producing ceramic matrix composites wherein the method has the steps of impregnating crystalline silicon carbide fibers coated with an interfacial coating with a ceramic matrix precursor; forming the impregnated fibers into the desired shape; curing the shape; and heating the cured shape to a temperature in the range of greater than 1450° C. to 1800° C. to convert the ceramic matrix precursor into a crystal containing ceramic. A densification step may be optionally carried out until the desired porosity/density of the ceramic matrix composite is achieved.
Claims19
A method for producing ceramic matrix composites comprising
- impregnating crystalline silicon carbide fibers containing less than 2 wt % oxygen and coated with an interfacial coating with a ceramic matrix precursor comprising a curable silicon-containing preceramic polymer;
- forming the impregnated fibers into the desired shape;
- curing the shape;
- and thereafter heating the cured shape to a temperature in the range of greater than 1450° C. to 1800° C. for a time effective to convert the ceramic matrix precursor into a crystal containing ceramic.
Dependencies are inferred from the claim text.