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
Personal Author(s):
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
Descriptors:
Subject Categories:
- Electrical and Electronic Equipment