Accession Number:

AD0605389

Title:

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

Descriptive Note:

Final technical summary rept. no. 3, 31 Oct 1963-30 Jun 1964

Corporate Author:

GENERAL ELECTRIC CO PLEASANTON CA VALLECITOS ATOMIC LAB

Report Date:

1964-06-30

Pagination or Media Count:

174.0

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.

Subject Categories:

  • Electric Power Production and Distribution
  • Electricity and Magnetism

Distribution Statement:

APPROVED FOR PUBLIC RELEASE