Methods of manufacturing a dispenser cathode and dispenser catho

Details Methods of manufacturing a dispenser cathode and dispenser catho Methods of manufacturing a dispenser cathode and dispenser catho

1983-03-21

1986-11-25

Ramsey, Kenneth J.

Electric lamp and discharge devices

Electrode and shield structures

Cathodes containing and/or coated with electron emissive...

H01J 904

Patent

active

046251421

ABSTRACT:
A dispenser cathode body is manufactured from a sintered metallic powder. A large scandium oxide concentration is provided beneath an emissive surface of the body, resulting in increased life, increased current density, and decreased sensitivity to ion bombardment.

REFERENCES:
patent: 3538570 (1970-11-01), Koppius
patent: 3719856 (1973-03-01), Koppius
patent: 4007393 (1977-02-01), Van Stratum et al.
patent: 4350920 (1982-09-01), Bertens

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