Accession Number : ADD012876

Title :   Method of Making a Long Life High Current Density Cathode from Tungsten and Iridium Powders Using a Barium Iridiate as the Impregnant.

Descriptive Note : Patent Application,

Corporate Author : DEPARTMENT OF THE ARMY WASHINGTON DC

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

Report Date : 15 Apr 1987

Pagination or Media Count : 9

Abstract : The general object of this invention is to provide a method of increasing the life and current density of the cathode of S.N. 023,161. A more particular object of the invention is to provide a method of making a long life high current density cathode for millimeter and microwave applications. It has now been found that the aforementioned objects can be attained by impregnating a tungsten-iridium billet with a barium iridiate. More particularly, according to the invention, a long life high current density cathode suitable for operation in millimeter and microwave applications is made from a mixture of tungsten and iridium powders using a barium iridiate. Keywords: Patent application.

Descriptors :   *PATENT APPLICATIONS, *IRIDIUM, *MICROWAVES, *TUNGSTEN, *CATHODES, BARIUM, POWDERS, MIXTURES, IMPREGNATION, INVENTIONS

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE