Patent Number: 6,309,994

Title: Fiber reinforced composite having an aluminum phosphate bonded matrix

Abstract: A method of forming fiber reinforced aluminum phosphate bonded material having improved strength at elevated temperatures. The method comprises the steps of: (a) preparing a slurry by blending alumina and alumina phosphate solution, the slurry being substantially free of silica; (b) providing a fiber substrate; (c) infiltrating the solution into the fiber substrate; and (d) curing the infiltrated substrate to form a fiber reinforced aluminum phosphate bonded composite material. In a preferred embodiment of the present invention, the fiber substrate is made from SiC fibers.

Inventors: Marra; Robert A. (Penn Hills, PA), Bray; Donald J. (Export, PA), Graddy, Jr.; G. Edward (Murrysville, PA), Ray; Siba P. (Plum Boro, PA)

Assignee: Aluminum Company of America

International Classification: C04B 35/63 (20060101); C04B 35/80 (20060101); C04B 035/10 (); C04B 035/80 ()

Expiration Date: 10/30/2018