CVD SiC matrix composites containing carbon coated fibers

Details CVD SiC matrix composites containing carbon coated fibers CVD SiC matrix composites containing carbon coated fibers

1989-07-03

1990-12-25

Beck, Shrive

Coating processes

Coating by vapor, gas, or smoke

Carbon or carbide coating

427255, 4272551, 4274197, C23C 1632, C23C 1626

Patent

active

049802020

ABSTRACT:
Chemical vapor deposition (CVD) techniques for forming tough silicon carbide (SiC) matrix composites. The introduction of methyldichlorosilane (MDS) to a reactor containing a fiber preform which been flushed with a noble gas, causes the formation of a carbon layer around the fibers. The carbon interlayer improves the fracture toughness of the composite.

REFERENCES:
patent: 3924034 (1975-12-01), Olcott
patent: 3969130 (1976-07-01), Bokros
patent: 4029844 (1977-06-01), Olcott
patent: 4315968 (1982-02-01), Suplinskas et al.
patent: 4766013 (1988-08-01), Warren
Veltri et al, J. Am. Ceram. Soc. 72(3), 1989, p. 478.

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