Method of Making a Long Life High Current Density Cathode from Tungsten and Iridium Powders Using a Mixture of Barium Peroxide and a Coated Emitter 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 porus billet, and then impregnating the billet with a mixture of barium peroxide and a coated emitter by firing the billet in a dry hydrogen furnace at a temperature at which the impregnant melts. Patent applications; Powder metallurgy; Powder metals particle size; Coatings. (edc)
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 20, 1989
- Accession Number
- ADD014364
Entities
People
- Bernard Smith
- Donald W. Eckart
- Gerard E. Freeman
- Louis E. Branovich
Organizations
- United States Army