Reaction bonded silicon carbide artefacts

Details Reaction bonded silicon carbide artefacts Reaction bonded silicon carbide artefacts

1984-08-27

1985-08-20

Van Balen, William J.

Stock material or miscellaneous articles

Self-sustaining carbon mass or layer with impregnant or...

264 60, 264 62, 264332, 428698, B32B 900, C04B 3334

Patent

active

045364494

ABSTRACT:
A silicon carbide-silicon matrix composite incorporates unreacted coarse carbon particles (e.g. graphite particles) dispersed throughout the composite. The coarse particles are incorporated in a coherent mixture of carbon and silicon carbide powders which, after compaction, is infiltrated with molten silicon to form a matrix of reaction bonded silicon carbide in a substantially continuous free silicon carbide phase. By using coarse carbon particles of density of at least 0.963 g/ml, the molten silicon reacts only with the surfaces of those particles which may as a result remain unreacted and dispersed throughout the composite.

REFERENCES:
patent: 3966855 (1976-06-01), Hollenberg et al.
patent: 4148894 (1979-04-01), Hillig et al.
patent: 4282288 (1981-08-01), Yoshino et al.
patent: 4299881 (1981-11-01), Luhleich et al.
patent: 4482512 (1984-11-01), Alsop

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