Composite ceramic sintered material

Stock material or miscellaneous articles – Composite – Of inorganic material

Patent

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Details

428212, 428336, 4283044, 4283126, 4283128, 4283186, 4283191, 428446, 428472, 428704, C04B 3556

Patent

active

054628130

ABSTRACT:
Disclosed is a composite ceramic sintered material comprising a surface layer of a composition which contains the silicon nitride and carbon, and an internal portion of the silicon carbide or a combination of the silicon carbide, silicon nitride and carbon, the content of carbon or the content of the silicon nitride being greater in the surface layer than in the internal portion.

REFERENCES:
patent: 3911188 (1975-10-01), Torti, Jr. et al.
patent: 4843040 (1989-06-01), Oda et al.

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