Process for production of a Si.sub.3 N.sub.4, based material

Details Process for production of a Si.sub.3 N.sub.4, based material Process for production of a Si.sub.3 N.sub.4, based material

1993-04-08

1994-05-03

Derrington, James

Plastic and nonmetallic article shaping or treating: processes

Including step of generating heat by friction

501 97, 501 98, 501 92, C04B 3565

Patent

active

053085612

ABSTRACT:
High-strength Si.sub.3 N.sub.4 -based material with a narrow range spread of values for mechanical properties useful for producing thick-walled ceramic parts for internal combustion engines, thick-walled ceramic fittings or cutting tools is produced by molding a powder-form starting mixture comprising powdered Si.sub.3 N.sub.4, finely divided elemental silicon and sintering additives, and subsequently heat treating the mixture to obtain a sintered molding very near the theoretical density of the material.

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