RESEARCH AND DEVELOPMENT PROGRAM OF THERMIONIC CONVERSION OF HEAT TO ELECTRICITY, VOLUME 1

Abstract

The electrical conductivity of Lucalox alumina has been measured under conditions representing the operational environment of a thermionic diode. Tungsten and molybdenum based coatings have been developed, metallized to alumina and tested in cesium vapor for over 2000 hours. Multilayered cermets were prepared but failed to prove electrically insulating. Alumina-to-nickel and Alumina-to-niobium shim seals were prepared and tested for extended periods of time. The joining of various refractory metals to metallized alumina using diffusion bonding, brazing, and braze-diffusion bonding techniques were investigated. The cesium corrosion resistance of various materials and seals was determined at 1000C.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Jun 30, 1964
Accession Number
AD0605389

Entities

People

  • A. J. Kaznoff
  • L. N. Grossman
  • R. H. Bristow

Organizations

  • General Electric

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Aluminum Oxides
  • Body Weight
  • Chemical Synthesis
  • Chemistry
  • Construction
  • Electrical Conductivity
  • Material Degradation Processes
  • Materials
  • Materials Processing
  • Materials Science
  • Measurement
  • Mechanical Working
  • Metallic Nanoparticles
  • Phase Diagrams
  • Refractory Metals
  • Solid Solutions
  • Test And Evaluation

Fields of Study

  • Materials science

Readers

  • Surface Engineering/Surface Coating Technology.

Technology Areas

  • Microelectronics