Glassy Carbon, Alloys

Abstract

Glassy carbons show promise of having a wide use in defense and space applications. The considerable porosity in glassy carbons results in their having a reasonably low coefficient of thermal expansion and, hence, reasonably good thermal shock resistance. This research program has had as one of its main objectives to determine the possibilities of ultimately modifying the structure and properties of glassy carbon by the addition of various elements to the starting organic precursors. Another main objective of this research program has been to study the effects of the application of pressure during polymerization and/or carbonization of glassy carbon precursors on the structure and properties of carbon produced. Progress and major results achieved in each area concerning the following: Glassy Carbons as Modified by Addition of Metals; Glassy Carbons Produced by Processing Precursors Under High Pressure; Cellulose Carbon-Carbon fiber(Chemical Vapor Deposition) Composites; and Binary Glassy Carbons by Vapor Deposition Methods.

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Document Details

Document Type
Technical Report
Publication Date
Oct 15, 1974
Accession Number
AD0787741

Entities

People

  • P. L. Walker

Organizations

  • Pennsylvania State University

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Carbon Carbon Composites
  • Chemical Synthesis
  • Chemical Vapor Deposition
  • Chemistry
  • Composite Materials
  • Electron Microscopes
  • Flexural Strength
  • Graphitic Materials
  • Hot Pressing
  • Material Degradation Processes
  • Materials
  • Materials Processing
  • Materials Science
  • Measurement
  • Mechanical Properties
  • Mechanical Working
  • Wear Resistance

Readers

  • Combustion science or combustion engineering.
  • Nanocomposite Materials Science
  • Powder metallurgy of Titanium alloys.

Technology Areas

  • Space