Method of Making a Long Life High Current Density Cathode from Tungsten and Iridium Powders Using a Quarternary Compound as the Impregnant.
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)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 02, 1990
- Accession Number
- ADD014425
Entities
People
- Bernard Smith
- Donald W. Eckart
- Gerard L. Freeman
- Louis E. Branovich
Organizations
- United States Army