DEVELOPMENT OF BARIUM OXIDE-URANIUM OXIDE TUNGSTEN AND BARIUM OXIDE- URANIUM OXIDE-RHENIUM EMITTERS FOR USE IN NUCLEAR HEATED THERMIONIC CONVERTERS

Abstract

The results of experimental and theoretical investigations that were conducted on various BaO-UO2 emitter materials are presented. X-ray analysis, evaporation rate studies, thermochemical calculations, electron emission studies and thermionic emission microscope examinations are discussed in detail. The results indicate that emitters contining 60 mol-% and 40 mol-% UO2 dispersed in a matrix of either tungsten or rhenium are comparable to the commercial dispenser type emitters that employ tribarium aluminate impregnated in tungsten. The use of UO2 in the emitter materials produced an emitter with a self contained heat source when operated in a nuclear environment.

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Document Details

Document Type
Technical Report
Publication Date
May 31, 1963
Accession Number
AD0409015

Tags

Communities of Interest

  • Advanced Electronics
  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Barium Oxides
  • Ceramic Materials
  • Chemical Reactions
  • Chemical Synthesis
  • Chemistry
  • Converters
  • Crystal Lattices
  • Crystal Structure
  • Current Density
  • Electron Emission
  • High Temperature
  • Measurement
  • Photoexcitation
  • Plastic Explosives
  • Test And Evaluation
  • Thermionic Converters
  • Thermionic Emission

Fields of Study

  • Materials science
  • Physics

Readers

  • Nuclear Non-Proliferation and International Security
  • Plasma Physics.
  • Surface Engineering/Surface Coating Technology.

Technology Areas

  • Microelectronics