A UNIQUE SILICON-CARBIDE REUSABLE THERMAL PROTECTION MATERIAL NOVEL THERMAL PROTECTION MATERIALS

Award Information
Agency:
National Aeronautics and Space Administration
Branch
n/a
Amount:
$50,000.00
Award Year:
1992
Program:
SBIR
Phase:
Phase I
Contract:
n/a
Agency Tracking Number:
14811
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
Materials & Electrochemical Re
7960 South Kolb Rd, Tucson, AZ, 85706
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
Dr. Raouf O. Loutfy
() -
Business Contact:
() -
Research Institution:
n/a
Abstract
A NEW AND UNIQUE PROCESS (CHEMICAL VAPOR REACTION; CVR) TO CONVERT GRAPHITE STRUCTURES TO LOW DENSITY SIC STRUCTURE WILL BE INVESTIGATED TO PRODUCE HIGH TEMPERATURE THERMAL PROTECTION MATERIALS. AVAILABLE HEAT SHIELDS INCLUDE CARBON PHENOLICS WHICH OCCUPY A LOT OF SPACE AND MORE RECENTLY DEVELOPED REUSABLE SURFACE INSULATION UTILIZING RIGID FIBROUS STRUCTURE OF SILICA AND ALUMINA HAVE A LIMITED TEMPERATURE CAPABILITY TO ABOUT 2500 DEGREES FAHRENHEIT. BOTH OF THESE HEAT SHIELD INSULATORS HAVE EXTREMELY LOW MECHANICAL PROPERTIES. IN THIS PROPOSED PROGRAM NET SHAPE LOW DENSITY SIC, WITH EXCELLENT STRENGTH, EXCELLENT THERMAL SHOCK RESISTANCE, HIGHEMISSIVITY, HIGH TEMPERATURE CAPABILITY AND LOW THERMAL CONDUCTIVITY WILL BE DEVELOPED. THE PROPERTIES OF THE SIC WILL BE OPTIMIZED BY INVESTIGATING THE EFFECT OF GRAPHITE PRECURSOR'S DENSITY AND MICROSTRUCTURE AND THE EFFECT OF CVRPROCESS OPERATING PARAMETERS. THE CVR-SIC MATERIALS WILL ALSO BE CVD SIC COATED TO IMPROVE ABLATION RESISTANCE. TESTSPECIMENS WILL BE FABRICATED AND FULLY CHARACTERIZED AND SAMPLES WILL BE DELIVERED TO NASA FOR EVALUATION.

* information listed above is at the time of submission.

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