CATALYTIC PROCESS FOR PRODUCING HIGH PURITY SILICON NITRIDE

Award Information
Agency: National Science Foundation
Branch: N/A
Contract: N/A
Agency Tracking Number: 7594
Amount: $50,000.00
Phase: Phase I
Program: SBIR
Awards Year: 1988
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
410 Chipeta Way, Suite 222, Salt Lake City, UT, 84108
DUNS: N/A
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 JOSEPH K WEEKS
 () -
Business Contact
Phone: () -
Research Institution
N/A
Abstract
SILICON NITRIDE IS A CERAMIC MATERIAL KNOWN FOR ITS HIGH TEMPERATURE STRENGTH, TOUGHNESS AND THERMAL SHOCK RESISTANCE. SILICON NITRIDE (SI3N4) POWDER IS COMMERCIALLY PRODUCED BY HIGH TEMPERATURE REACTIONS BETWEEN NITROGEN AND SILICON OR SILICA AND CARBON. THE OBJECTIVE OF THIS PROGRAM IS TO DEVELOP AN IMPROVED METHOD FOR PRODUCING HIGH PURITY, FINE GRAINED SILICON NITRIDE POWDER. VARIOUS TRANSITION METAL CATALYSTS WILL BE EVALUATED BY THERMOGRAVIMETRIC ANALYSIS FOR THEIR EFFECT ON REACTION KINETICS. THE REACTED SILICON POWDERS WILL BE EVALUATED FORCOMPOSITION, PARTICLE SIZE AND MORPHOLOGY. THE EXTENT OF CATALYST REMOVAL FROM THE SILICON NITRIDE BY CHEMICAL TECHNIQUES WILL BE DETERMINED. PRINCIPLE ADVANTAGES OF THE PROCESS WILL BE DECREASED ENERGYREQUIREMENTS AND PRODUCTION OF A FINER, MORE SINTERABLE POWDER. FINE SILICON NITRIDE WILL BE MORE EASILY CONSIDATEDINTO DENSE, FLAW FREE CERAMICS.

* Information listed above is at the time of submission. *

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