Method of making a long lived high current density cathode from

Details Method of making a long lived high current density cathode from Method of making a long lived high current density cathode from

1987-03-06

1987-11-24

Rowan, Kurt

Electric lamp or space discharge component or device manufacturi

Process

Electrode making

445 46, 445 51, H01J 904, H01J 912

Patent

active

047086815

ABSTRACT:
A long lived high current density cathode is made from a mixture of tungs and iridium powders by processing the mixture of powders with an activator into a porous billet, and then impregnating the billet with a chemical mixture of barium oxide, strontium oxide, and aluminum oxide by firing the billet in a dry hydrogen furnace at a temperature at which the impregnant melts.

REFERENCES:
patent: 4078900 (1978-03-01), Smith
patent: 4236287 (1980-02-01), Smith
patent: 4444718 (1984-04-01), Smith

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