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
Method of Making a Cathode from Tungsten and Iridium Powders Using a Reaction Product from Reacting Barium Peroxide with an Excess of Tungsten as the Impregnant