RESEARCH AND DEVELOPMENT ON ADVANCED GRAPHITE MATERIALS, VOLUME XXX - OXIDATION RESISTANT GRAPHITE BASE COMPOSITES.

Abstract

The report describes certain graphite base composites capable of resisting oxidation by forming a protective coating from their oxidation products. When first exposed to oxidizing conditions, the additives or graphite-additive reactants oxidize and form a coating which protects the composite against further oxidation. Since these materials are homogeneous composites, they can be machined without destroying their oxidation resistant characteristics. The most effective additives investigated were combinations of ZrB2, Si, B, Cb, and Th. All materials were prepared in a one-step operation by hot pressing. The report describes the equipment required to fabricate graphite-refractory composites by hot pressing at temperatures up to 3100 C. Oxidation test methods employ indirect induction heating, resistance heating, arc image techniques, and electromagnetic levitation. (Author)

Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1964
Accession Number
AD0600340

Entities

People

  • J. M. Criscione
  • K. J. Zeitsch

Tags

DTIC Thesaurus Topics

  • Additives (Chemicals)
  • Coatings
  • Composite Materials
  • Graphitic Materials
  • Heating
  • Hot Pressing
  • Induction Heating
  • Materials
  • Materials Processing
  • Materials Testing
  • Oxidation
  • Protective Coatings
  • Resistance
  • Test Methods

Fields of Study

  • Materials science

Readers

  • Powder metallurgy of Titanium alloys.
  • Reinforced Composite Materials
  • Thin Film Deposition Science.