Electric lamp or space discharge component or device manufacturi – Process – Electrode making
Patent
1988-07-21
1989-09-05
Ramsey, Kenneth J.
Electric lamp or space discharge component or device manufacturi
Process
Electrode making
313346DC, H01J 904
Patent
active
048634107
ABSTRACT:
A long life high current density cathode is made from a mixture of tungsten nd iridium powders by processing the mixture of powders with an activator into a porous billet, and then impregnating the billet with a low melting point impregnant by firing the billet in a dry hydrogen furnace at a temperature at which the impregnant melts.
REFERENCES:
patent: 4671777 (1987-06-01), Van Esdonk et al.
patent: 4708681 (1987-11-01), Branovich et al.
patent: 4735591 (1988-04-01), Branovich et al.
Branovich Louis E.
Eckart Donald W.
Freeman Gerard L.
Smith Bernard
Gordon Roy E.
Kanars Sheldon
Ramsey Kenneth J.
The United States of America as represented by the Secretary of
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