Accession Number:

ADA238475

Title:

Oxidation and Wear Resistant Carbon-Carbon Composites

Descriptive Note:

Final rept. 1 Oct 1990-30 Apr 1991

Corporate Author:

LYNNTECH INC BRYAN TX

Report Date:

1991-05-30

Pagination or Media Count:

41.0

Abstract:

Widespread application of carbon carbon composites has been restricted by their low oxidation resistance at elevated temperatures. A major barrier to the development of protective ceramic coatings for these materials is the lack of experimental methods of depositing adherent, crack-free, protective ceramic deposits with high deposition rates in a cost-effective manner. The objective of this project is to develop dense, adherent, electrophoretically deposited ceramic coatings on carbon-carbon composites, giving rise to enhanced oxidation resistance and wear resistance. Ceramic materials, coating additives and methods for bonding and densifying the selected materials have been identified. A broad range of ceramic materials were successfully deposited on carbonaceous substrates from a non-aqueous deposition bath using electrophoresis. Deposited ceramic layers were bonded using either polymeric binders of organometallic compounds or inorganic phosphate-based binders. Attempts to densify the ceramic coatings were unsuccessful.

Subject Categories:

  • Coatings, Colorants and Finishes
  • Laminates and Composite Materials

Distribution Statement:

APPROVED FOR PUBLIC RELEASE