Accession Number:

ADD014425

Title:

Method of Making a Long Life High Current Density Cathode from Tungsten and Iridium Powders Using a Quarternary Compound as the Impregnant.

Descriptive Note:

Patent Application, Filed 2 Jan 90,

Corporate Author:

DEPARTMENT OF THE ARMY WASHINGTON DC

Report Date:

1990-01-02

Pagination or Media Count:

8.0

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 quaternary compound including barium, oxygen, a metal selected from the group consisting of osmium, iridium, rhodium, and rhenium, and a metal selected from the group consisting of strontium, calcium, scandium and titanium, by firing the billet in a dry hydrogen furnace at a temperature at which the impregnant melts. Patent applications. RRH

Subject Categories:

  • Electrical and Electronic Equipment

Distribution Statement:

APPROVED FOR PUBLIC RELEASE