Process for production of silicon nitride material

Details Process for production of silicon nitride material Process for production of silicon nitride material

1993-09-24

1995-01-24

Derrington, James

Plastic and nonmetallic article shaping or treating: processes

Including step of generating heat by friction

501 97, 501 98, C04B 3558

Patent

active

053840810

ABSTRACT:
The present invention relates to a process for the production of a dense Si.sub.3 N.sub.4 material by normal pressure sintering of mouldings which have been manufactured from mixtures of Si.sub.3 N.sub.4 powders and sintering additives without being embedded in a powder packing and are sintered at temperatures of 1775.degree. C.+-. 75.degree. C.

REFERENCES:
patent: 3950464 (1976-04-01), Masaki
patent: 4280850 (1981-07-01), Smith
patent: 4354990 (1982-10-01), Martinengo et al.
patent: 4517168 (1985-05-01), Kawahito
patent: 5017530 (1991-05-01), Arakawa et al.
patent: 5248490 (1993-09-01), Krause

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