Improved Barrier Coatings for Continuous Silicon-Carbide Fibers in Ceramic Composites

Award Information
Agency:
National Aeronautics and Space Administration
Branch
n/a
Amount:
$674,938.00
Award Year:
1995
Program:
SBIR
Phase:
Phase II
Contract:
n/a
Award Id:
22692
Agency Tracking Number:
22692
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
11907 Madison Avenue, Cleveland, OH, 44107
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
Arthur W. Moore
(216) 529-3962
Business Contact:
() -
Research Institute:
n/a
Abstract
A new barrier coating for protection of continuous SiC fibers in composites up to 1500C will be applied to continuous fiber tows by chemical vapor deposition (CVD) in commercial apparatus. Current SiC fibers, and currently used BN barrier coatings, are restricted to use below 1100C and are unsuitable for use in turbine combustors and other high temperature applications. Two CVD compositions in the BN/TiN system and two compositions in another system. Interfacial shear properties, oxidation and moisture resistance, thermal expansion coefficients and chemical analyses will be obtained on well defined bulk SiC before coating continuous tows. Average coating thickness, coating uniformity and textile handling behavior of the coating systems will be evaluated before selecting a preferred system to be scaled up in Phase II.

* information listed above is at the time of submission.

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