POWDERS & COATINGS

Award Information
Agency: National Aeronautics and Space Administration
Branch: N/A
Contract: N/A
Agency Tracking Number: 598
Amount: $49,000.00
Phase: Phase I
Program: SBIR
Awards Year: 1983
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
1536 Highland Ave., Duarte, CA, 91010
DUNS: N/A
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 JOHN F. MAHONEY
 PRINCIPAL INVESTIGATOR
 () -
Business Contact
Phone: () -
Research Institution
N/A
Abstract
THIS STUDY IS FOR THE SYNTHESIS OF HIGH PERFORMANCE ULTRAFINE SI(3)N(4) CERAMIC MATERIAL (1 MICRON OR LESS SPERICAL PARTICLES) BY REACTING NITROGEN GAS WITH A BEAM OF MOLTEN SILICON MICRO-DROPLETS. THIS SINGLE-STEP PROCESS IS EXPECTED TO PROVIDE REACTION BONDED MATERIAL WITH EXCELLENT OXIDATION AND HOT CORROSION RESISTANCE AT ELEVATEDTEMPERATURES. ELECTROHYDRODYNAMIC METHODS, DEVELOPED PREVIOUSLY FOR SILICON COATING TECHNOLOGY, ARE APPLIED FOR THE GENERATION OF MICRODROPLETS. A MOLTEN SILICON DROPLET BEAM PASSES THROUGH A NITRIDATION CHAMBER (EXPOSURE TIME ON THE ORDER OF MILLISECONDS) AND IS SUBSEQUENTLY COLLECTED. CHARACTERIZATION OF THE PARTICLES IS PERFORMED TO DETERMINE THE CHEMICAL, PHYSICAL AND MICROSTRUCTURAL PROPERTIES OF THESI(3)N(4) ULTRAFINE POWDER. IN ADDITION TO SI(3)N(4) CERAMICMATERIALS ARE AMENABLE FOR PROCESSING BY THE PROPOSED METHODINCLUDING A1N.

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

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