Accession Number:

ADA046000

Title:

Graded Pyrolytic Graphite/Silicon Carbide Coating Deposition Studies

Descriptive Note:

Final rept. Jul 1974-Oct 1975

Corporate Author:

ATLANTIC RESEARCH CORP ALEXANDRIA VA

Report Date:

1977-04-01

Pagination or Media Count:

153.0

Abstract:

Codeposited coatings of pyrolytic graphitesilicon carbide were fabricated by chemical vapor deposition at temperatures ranging from 3000 F to 3800 F using methane and methyltrichlorosilane as precursors and nitrogen as a diluent and carrier. The effect of temperature and methyltrichlorosilane concentration on coating composition SiC content and morphology were determined. Specimens of codeposited coatings were fabricated to determine the physical properties, thermal stress state and erosion characteristics of various PGSiC compositions. Coating samples were examined and characterized microscopically, by X-ray diffraction and by electron microprobe.

Subject Categories:

  • Ceramics, Refractories and Glass
  • Coatings, Colorants and Finishes
  • Rocket Engines

Distribution Statement:

APPROVED FOR PUBLIC RELEASE