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HIGH TEMPERATURE ADVANCED STRUCTURAL CERAMICS

Award Information

Agency:
Department of Energy
Branch:
N/A
Award ID:
7718
Program Year/Program:
1988 / SBIR
Agency Tracking Number:
7718
Solicitation Year:
N/A
Solicitation Topic Code:
N/A
Solicitation Number:
N/A
Small Business Information
Materials & Electrochemical Research (MER) Corp.
7960 S. Kolb Rd. Tucson, AZ 85756-9237
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Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
 
Phase 1
Fiscal Year: 1988
Title: HIGH TEMPERATURE ADVANCED STRUCTURAL CERAMICS
Agency: DOE
Contract: N/A
Award Amount: $50,000.00
 

Abstract:

CURRENT INVESTIGATIONS HAVE SHOWN HOW WHISKER REINFORCEMENT HAS INCREASED THE FRACTURE TOUGHNESS OF SIC-WHISKER/CERAMIC-MATRIX COMPOSITES. HOWEVER, IT WAS FOUND THAT THE STRENGTH OF THE COMPOSITES DECREASED AS A RESULT OF FLAWS INTRODUCED WITH THE WHISKER ADDITION AND THEPOOR SINTERABILITY OF SI(3)N(4). EXTERNAL PRESSURE HAS TO BE INTRODUCED (E.G. BY HOT-PRESSING OR HOT-ISOSTATIC PRESSING) FOR ELIMINATING THE FLAWS. SIALON CERAMICS CAN REACH ALMOST FULL DENSITY THROUGH PRESSURELESS SINTERING, AND THEY ALSO OFFER THE SAME SIGNIFICANCE IN HIGH TEMPERATURE MECHANICAL PROPERTIES AS SI(3)N(4). DENSIFICATION AND STRENGTHENING BY TRANSIENT LIQUID PHASE SINTERING (TLPS) HAS BEEN EXPLORED. HOWEVER, COMBINING WHISKER REINFORCEMENT WITH TLPS HAS NOT PREVIOUSLY BEEN DEMONSTRATED. THIS PROJECT UTILIZES UNIQUE SINTERABILITY OFSIALON, TLPS, AND SIC WHISKER REINFORCEMENT TO OBTAIN FLAW FREE, HOMOGENEOUS AND HIGH TEMPERATURE (>1400 DEGREES CENTIGRADE) STRENGTH COMPOSITES THROUGH PRESSURELESS SINTERING.

Principal Investigator:


0

Business Contact:

Dr J C Withers
6027469442
Small Business Information at Submission:

Materials & Electrochemical Rs
4233 South Fremont Avenue Tucson, AZ 85714

EIN/Tax ID:
DUNS: N/A
Number of Employees: N/A
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No