Accession Number : ADD013845

Title :   Method of Making Long Life High Current Density Cathode from Tungsten and Iridium Powders Using a Low Melting Point Impregnant.

Descriptive Note : Patent Application, Filed 21 Jul 88,

Corporate Author : DEPARTMENT OF THE ARMY WASHINGTON DC

Personal Author(s) : Branovich, Louis E ; Smith, Bernard ; Freeman, Gerard L ; Eckart, Donald

Report Date : 21 Jul 1988

Pagination or Media Count : 9

Abstract : A long life high current density cathode is made from a mixture of tungsten and iridium powders by processing the mixture of powders with an activator into a porous billet, and then impregnating the billet with a low melting point impregnant by firing the billet in a dry hydrogen furnace at a temperature at which the impregnant melts. Patent applications. (mjm)

Descriptors :   *IRIDIUM, *PATENT APPLICATIONS, *POWDERS, *TUNGSTEN, *CATHODES, BILLETS(MATERIALS), DRY MATERIALS, FURNACES, HYDROGEN, IMPREGNATION, MIXTURES, POROUS MATERIALS, PROCESSING

Subject Categories : Fabrication Metallurgy
      Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE