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Title: Use of free silicon in liquid phase sintering of silicon nitrides and sialons

This invention relates to the production of improved high density nitrogen based ceramics by liquid-phase densification of silicon nitride or a compound of silicon-nitrogen-oxygen-metal, e.g. a sialon. In the process and compositions of the invention minor amounts of finely divided silicon are employed together with the conventional liquid phase producing additives to enhance the densification of the resultant ceramic. 4 figs.
Authors:
;
Publication Date:
OSTI Identifier:
7149820
Report Number(s):
US 4552711; A
CNN: DMR-79-24008; PPN: US 6-634530
DOE Contract Number:
AC02-77ER04386
Resource Type:
Patent
Resource Relation:
Patent File Date: 26 Jul 1984
Research Org:
Cornell University
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ALUMINIUM OXIDES; SINTERING; SILICON NITRIDES; CERAMICS; COMPACTING; DENSITY; ALUMINIUM COMPOUNDS; CHALCOGENIDES; FABRICATION; NITRIDES; NITROGEN COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; PNICTIDES; SILICON COMPOUNDS 360201* -- Ceramics, Cermets, & Refractories-- Preparation & Fabrication