CATALYTIC PROCESS FOR PRODUCING HIGH PURITY SILICON NITRIDE

Award Information
Agency:
National Science Foundation
Branch
n/a
Amount:
$50,000.00
Award Year:
1988
Program:
SBIR
Phase:
Phase I
Contract:
n/a
Agency Tracking Number:
7594
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
Technical Research Assocs Inc
410 Chipeta Way, Suite 222, Salt Lake City, UT, 84108
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
JOSEPH K WEEKS
() -
Business Contact:
() -
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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