Silicon carbide reinforced reaction bonded silicon carbide compo

Details Silicon carbide reinforced reaction bonded silicon carbide compo Silicon carbide reinforced reaction bonded silicon carbide compo

1996-08-16

1998-10-06

Speer, Timothy M.

Stock material or miscellaneous articles

Composite

Of inorganic material

428241, 428242, 428245, 428293, B32B 1700

Patent

active

058174320

ABSTRACT:
The invention includes a process for producing a reaction bonded silicon carbide composite reinforced with coated silicon carbide fibers which is suitable for high temperature applications. The process includes the steps of coating SiC fibers with AlN, BN or TiB.sub.2 ; treating the coated fibers with a mixture of SiC powder, water and a surfactant; preparing a slurry comprising SiC powder and water; infiltrating the coated fibers with the slurry to form a cast; drying the cast to form a green body; and reaction bonding the green body to form a dense SiC fiber reinforced reaction bonded matrix composite.
The invention further includes a SiC fiber reinforced SiC composite comprising a reaction bonded SiC matrix, a SiC fiber reinforcement possessing thermal stability at high temperatures and an interface coating on the fibers having chemical and mechanical compatibility with the SiC matrix and with the SiC fibers.

REFERENCES:
patent: 5296311 (1994-03-01), McMurtry
patent: 5484655 (1996-01-01), Lau

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