Chemistry of inorganic compounds – Silicon or compound thereof – Binary compound
Patent
1992-10-20
1995-04-11
Chaudhuri, Olik
Chemistry of inorganic compounds
Silicon or compound thereof
Binary compound
501 97, C01B 2106, C04B 3558
Patent
active
054055920
ABSTRACT:
A silicon-nitride beta-phase material including a non-densified structure of beta silicon nitride crystals having appreciable strength without any significant amount of liquid forming agents is made by comminuting a slurry including a mixture of silicon powder and water to form non-oxidized surfaces on the silicon powder and to allow chemical reaction between the silicon and the water, reducing the water content of the reacted slurry to a degree sufficient to form a resultant dry mass, nitriding the dry mass by exposure to a nitriding gas including at least nitrogen to form a mass of alpha-phase silicon nitride, and converting the resultant silicon nitride mass at a conversion temperature of from about 1450.degree. C. to about 2100.degree. C. to convert the silicon nitride from an alpha-phase material to a non-densified beta phase silicon nitride material.
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Edler James P.
Lisowsky Bohdan
Cargill Lynn E.
Chaudhuri Olik
Eaton Corporation
Horton Ken
Rulon Paul S.
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