HOT ISOSTATIC PRESSING OF SILICON NITRIDE AND SILICON CARBIDE IN NITROGEN PRODUCES STRUCTURAL CERAMICS WITH STRENGTH MORE THAN 20% ABOVE NORMAL HOT PRESSED STRUCTURES.

Award Information
Agency:
Department of Energy
Branch
n/a
Amount:
$50,000.00
Award Year:
1983
Program:
SBIR
Phase:
Phase I
Contract:
n/a
Award Id:
329
Agency Tracking Number:
329
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
Biddeford Industrial Park, Biddeford, ME, 04005
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
H. DEAN BATHA, PH.D.
DIVISION MANAGER/EMTL
() -
Business Contact:
() -
Research Institute:
n/a
Abstract
HOT ISOSTATIC PRESSING OF SILICON NITRIDE AND SILICON CARBIDE IN NITROGEN PRODUCES STRUCTURAL CERAMICS WITH STRENGTH MORE THAN 20% ABOVE NORMAL HOT PRESSED STRUCTURES. THE MECHANISM OF STRENGTHENING BY THIS METHOD IS NOT UNDERSTOOD. EXAMINATION OF THE STRUCTURE OF THE BODIES INDICATE THE PRESENCE OF ACICULAR SIC OR SI3N4. IF THIS IS FORMED "IN SITU", IT SHOULD BE POSSIBLE TO ENCOURAGE THE FORMATION OF FIBERS, PRODUCING A CERAMIC FIBER REINFORCED CERAMIC WITH GREAT TOUGHNESS. THIS STUDY WILL DETERMINE THEMECHANISM OF STRENGTHENING BY HOT ISOSTATIC PRESSING IN NITROGEN AND WILL GIVE A PROCESS FOR HIGH STRENGTH CERAMICS.THE CONTRACTOR SHALL INVESTIGATE THE HOT ISOSTATIC PRESSING OF SILICON NITRIDE AND SILICON CARBIDE IN NITROGEN IN ORDER TO DEFINE OPERATING CONDITIONS, RAW MATERIAL PROPERTIES AND THE ROLE OF CERTAIN ADDITIVES REQUIRED TO PRODUCE BODIES WITH SUPERIOR STRENGTH AND TOUGHNESS.

* information listed above is at the time of submission.

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