Thermionic cathode and process for preparing the same

Details Thermionic cathode and process for preparing the same Thermionic cathode and process for preparing the same

1981-04-20

1984-03-13

Barr, Josephine

Compositions

Electrically conductive or emissive compositions

Metal compound containing

252512, 252513, 252514, 313346R, H01B 106

Patent

active

044366515

ABSTRACT:
A thermionic cathode is disclosed employing an alkaline earth metal hydroxy oxy carbonate as an emission material. Cathodes in accordance with the present invention are capable of operating in the range of 650.degree. C. to 800.degree. C. and can be formed by compressing a powdered mixture of the emission material and a metal.

REFERENCES:
patent: 2545695 (1951-03-01), Hagelston et al.
patent: 3070550 (1962-12-01), Aoi et al.
patent: 3541661 (1970-05-01), Reaves
patent: 3656020 (1972-04-01), Cronin
patent: 3760218 (1973-09-01), Cronin
patent: 3922428 (1975-11-01), Cronin

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