RECENT DEVELOPMENTS IN PYROLYTIC GRAPHITE

Abstract

A study of the fine microstructure of boronated pyrolytic graphite was made utilizing optical and electron microscopy and X-ray diffraction techniques. The influence of boron content on the laminar structure, the lattice parameter, the lattice strain, the particle size, and the flexural strength of pyrolytic graphite were studied. Significant changes in the behavior of all investigated parameters were observed in the 0.50 to 0.75 percent boron range. A mechanism relating these changes to the appearance of a B4C deposit is hypothesized. In addition, the effects of post-deposition thermal treatment on the mechanical properties of unboronated pyrolytic graphite are discussed. Some general remarks concerning similarities in structure of pyrolytic materials are presented.

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1969
Accession Number
AD0688074

Entities

People

  • Charles P. Gazzara
  • R. N. Katz

Organizations

  • United States Army Research Laboratory

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Boundaries
  • Ceramic Materials
  • Crystals
  • Dispersion Hardening
  • Electron Microscopes
  • Flexural Strength
  • Heat Treatment
  • High Temperature
  • Materials
  • Materials Engineering
  • Materials Processing
  • Materials Science
  • Mechanical Properties
  • Mechanics
  • Microstructure
  • Particle Size
  • Silicon Carbide

Readers

  • Reinforced Composite Materials
  • Theoretical Analysis.
  • Thin Film Deposition Science.

Technology Areas

  • Microelectronics
  • Microelectronics - Graphene