Accession Number : AD0434766


Title :   INVESTIGATION OF VARIOUS ACTIVATOR REFRACTORY SUBSTRATE COMBINATIONS.


Descriptive Note : Final rept.,


Corporate Author : GENERAL ELECTRIC CO SCHENECTADY N Y


Personal Author(s) : Affleck,J H ; Boyd,W T


Report Date : Mar 1964


Pagination or Media Count : 89


Abstract : A study was made of various thin film activatorrefractory substrate combinations with emphasis on the determination of evaporation of the activator material under various temperature and operation conditions. The purpose of this program was twofold: (1) to determine the properties of new materials combinations capable of producing high emission density and long life from a thermionic cathode, and (2) to investigate the effects of various gases upon the thermionic emission. (Author)


Descriptors :   *CATHODES(ELECTRON TUBES) , MICROWAVE EQUIPMENT , MATERIALS , MANUFACTURING , POWDER METALLURGY , TUNGSTEN , BARIUM COMPOUNDS , SILICATES , POROUS METALS , SINTERING , HYDROGEN , NICKEL , CALCIUM COMPOUNDS , CARBONATES , ZIRCONIUM COMPOUNDS , HYDRIDES , ALUMINATES , TANTALUM , EMISSIVITY , THERMIONIC EMISSION , WORK FUNCTIONS , MEASUREMENT , POISONING , GASES , OXYGEN , AIR , ARGON


Distribution Statement : APPROVED FOR PUBLIC RELEASE