Accession Number:

ADA169355

Title:

Mechanical Testing of a Coated Carbon/Carbon Composite at Elevated Temperatures in Air

Descriptive Note:

Final rept.

Corporate Author:

ARMY LAB COMMAND WATERTOWN MA MATERIALS TECHNOLOGY LAB

Report Date:

1986-05-01

Pagination or Media Count:

21.0

Abstract:

The controlled nucleation thermochemical deposition CNTD process can apply a silicon carbide coating to carboncarbon CC composites. Coated C C composite materials are potentially useful in advanced gas turbine engines particularly as static components, although rotating components are feasible. Success of such a system will require a coating that will ensure oxidation resistance and mechanical integrity. This report represents a preliminary characterization of mechanical properties of a silicon carbide coated, CC composite at ambient and elevated temperature in air. The coating was applied by the controlled nucleation thermochemical deposition CNTD process. The strength, static fatigue, and oxidation results of the coated composite were favorable at temperatures up to 2372 F 1300 C in air. Keywords Ceramic coatings Flexural strength Thermal shock Rupture Microstructure Fractography.

Subject Categories:

  • Coatings, Colorants and Finishes
  • Laminates and Composite Materials
  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE