Development and Evaluation of PG/SiC Codeposited Coatings for Rocket Nozzle Inserts. Volume 1. Thermal and Mechanical Properties of Pyrolytic Graphite/Silicon Carbide Codeposit

Abstract

The thermal and mechanical properties of PG(Pyrolytic Graphite)/SiC were determined as functions of temperature, 4500F, SiC concentration, to approximately 25 percent, and crystal orientation, a and c directions, of the PG phase. The material was found to be unique in that it is nearly isotropic with respect to thermal expansion and elastic modulus but still quite anisotropic with respect to thermal conductivity. The room temperature tensile strength was much greater than PG in the c direction, as expected as a result of the SiC crystal reinforcement. Tensile strength and elastic modulus were also greater than PG in the ab direction to up 4000F. The data must be considered to be preliminary and nonstatistical.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1973
Accession Number
AD0769285

Entities

People

  • Richard H. Singleton

Organizations

  • ARCO

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force
  • Ceramic Materials
  • Composite Materials
  • Crystal Structure
  • Fabrication
  • Materials
  • Materials Processing
  • Measurement
  • Mechanical Engineering
  • Mechanical Properties
  • Mechanical Working
  • Mechanics
  • Modulus Of Elasticity
  • Strain Gages
  • Tensile Strength
  • Thermal Conductivity
  • Three Dimensional

Fields of Study

  • Materials science

Readers

  • Combustion and Flow Dynamics.
  • Materials Science and Engineering.
  • Mechanical Engineering/Mechanics of Materials.