DEVELOPMENT OF REFRACTORY CERAMICS THAT CAN BE PROCESSED AT TEMPERATURES CONSIDERABLY LOWER THAN THEIR MAXIMUM USE TEMPERATURE

Abstract

Part 1. The presintering study was innitiated to determine the densification mechanisms of a high alumina body utilizing the presintering process, an analysis of phase reactions with regard to equilibrium conditions are shown. Conclusions from the overall study are presented. Part II. A study of the densification of pure alumina, pure alumina with 0.25% MgO and pure alumina containing 2.0% MgO was carried out in a vacuum. Procedures are outlined for the study of the densification of these three compositions in dry hydrogen and dry helium. In addition three other compositions will be used with the three afore mentioned compositions to determine the units of solid solution of MgO in Al2O3. Part III. Cor dierite compositions were fritted with the frit utilized as the basic raw material. Density and moisture absorption results and devitrification and maturing temperatures are presented.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1963
Accession Number
AD0406461

Tags

Communities of Interest

  • Air Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Absorption
  • Aluminum Oxides
  • Bodies
  • Chemical Reactions
  • Chemistry
  • Diagrams
  • Engineering
  • Hydrogen
  • Liquid Phases
  • Liquids
  • Low Temperature
  • Materials
  • Moisture
  • Particle Size
  • Phase Diagrams
  • Solid Solutions
  • X-Ray Diffraction

Fields of Study

  • Materials science

Readers

  • Combustion science or combustion engineering.
  • Surface Engineering/Surface Coating Technology.