RESEARCH AND DEVELOPMENT PROGRAM OF THERMIONIC CONVERSION OF HEAT TO ELECTRICITY, VOLUME 1
Final technical summary rept. no. 3, 31 Oct 1963-30 Jun 1964
GENERAL ELECTRIC CO PLEASANTON CA VALLECITOS ATOMIC LAB
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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.
- Electric Power Production and Distribution
- Electricity and Magnetism