Reaction injection molding of silicon nitride ceramics having cr

Details Reaction injection molding of silicon nitride ceramics having cr Reaction injection molding of silicon nitride ceramics having cr

1992-03-10

1993-08-31

Derrington, James

Plastic and nonmetallic article shaping or treating: processes

Including step of generating heat by friction

264 65, 2643282, C04B 3558

Patent

active

052406580

ABSTRACT:
A sintered, Si.sub.3 N.sub.4 -containing ceramic article is prepared by a reaction injection molding process comprising (1) injecting into a heated mold a fluid, nondilatant mixture of (a) at least 40% by volume of a powder mixture of (i) Si.sub.3 N.sub.4, (ii) a silicate glass-forming sintering aid and (iii) a high metal content silicide, and (b) a curable Si.sub.3 N.sub.4 precursor binder, to cure the binder and produce a hardened molded article, and (2) heating the molded article under a suitable atmosphere to convert the cured binder to a Si.sub.3 N.sub.4 -containing ceramic. The molded article is then sintered under a vacuum to crystallize the silicate glass phase by deoxygenation.

REFERENCES:
patent: 3719630 (1973-03-01), Autonen
patent: 3853567 (1974-12-01), Verbeek
patent: 3892583 (1975-07-01), Winter et al.
patent: 4264550 (1981-04-01), Ezis
patent: 4482669 (1984-11-01), Seyferth et al.
patent: 4560526 (1985-12-01), Okamura
patent: 4627945 (1986-12-01), Winkelbauer et al.
patent: 4650837 (1987-03-01), Seyferth et al.
patent: 4689252 (1987-08-01), Lebrun et al.
patent: 4720532 (1988-01-01), Seyferth et al.
patent: 4722988 (1988-02-01), Porte et al.
patent: 4761389 (1988-08-01), Rabe et al.
patent: 4772494 (1988-09-01), Porte et al.
patent: 4939197 (1990-07-01), Su
patent: 5094986 (1992-03-01), Matsumoto et al.

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