HFO2 AND ZRO2 OVERCOATING OF SIC FOR EXTENDING THE OXIDATION PROTECTION OF CARBON COMPOSITES TO 3500F

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: N/A
Agency Tracking Number: 2120
Amount: $500,000.00
Phase: Phase II
Program: SBIR
Awards Year: 1986
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
Ultramet
12173 Montague St, Pacoima, CA, 91331
DUNS: N/A
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Richard B Kaplan
 (818) 899-0236
Business Contact
Phone: () -
Research Institution
N/A
Abstract
SIC COATINGS CAN PROTECT CARBON COMPOSITES FROM OXIDATION UP TO ABOUT 3000F. ZRO2 AND HFO2 HAVE BEEN APPLIED AS OVERCOATINGS TO EXTEND OXIDATION PROTECTION TO 3500F, BUT THESE LAYERS TEND TO SPALL. WE PROPOSE HERE AN INNOVATIVE METHOD OF GRADING THE COATING FROM PURE SIC AT THE C/C INSIDE SURFACE TO PURE HF (OR ZR) OXIDE AT THE OUTSIDE SURFACE. THIS IS THE MOST EFFECTIVE WAY TO ELIMINATE THERMAL STRESS CONCENTRATION AND OVERCOME THE CRACKING AND SPALLING PROBLEM.

* information listed above is at the time of submission.

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