IN-SITU COMPOSITES IN THE ALUMINUM NITRIDE-ALUMINA SYSTEM

Award Information
Agency: Department of Defense
Branch: Missile Defense Agency
Contract: N/A
Agency Tracking Number: 25535
Amount: $65,000.00
Phase: Phase I
Program: SBIR
Awards Year: 1994
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
21414 68th Avenue South, Kent, WA, 98032
DUNS: N/A
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Ender Savrun, Phd
 (206) 872-9500
Business Contact
Phone: () -
Research Institution
N/A
Abstract
Aluminum nitride (AlN), an electronic substrate material, is a promising ceramic for high-temperature structural applications. The self-reinforced AlN to be developed in this project will have room-temperature properties of 1000 MPa flexural strength and 7 to 8 MPa.m 1/2 fracture toughness. The composite will be free of glassy grain boundary phases. It will, therefore, have superior high-temperature mechanical properties, in-particular, creep resistance. Starting-powder characteristics, sintering-aid type and amount, sintering parameters including isothermal holding time and temperature, and furnace atmosphere will be systematically evaluated too achieve self-reinforcing microstructures. Scanning electron microscopy and light microscopy will be used to evaluate microstructural evolution.

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

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