Coprecipitation process for thermionic cathode type materials

Details Coprecipitation process for thermionic cathode type materials Coprecipitation process for thermionic cathode type materials

1982-06-23

1983-10-25

Barr, Josephine

Compositions

Electrically conductive or emissive compositions

Metal compound containing

427 77, H01B 106

Patent

active

044118279

ABSTRACT:
A method for fabricating a homogenous and uniformly sized mixture of alkaline earth metal carbonates found to be especially useful as an emission type coating material for application to a cathodic element of a thermionic vacuum tube.

REFERENCES:
patent: 1842161 (1932-01-01), Fredenburgh
patent: 2545695 (1951-03-01), Hagelston
patent: 2985548 (1961-05-01), Blickwedel et al.
patent: 3719856 (1973-03-01), Koppins
patent: 3879830 (1975-04-01), Buescher
patent: 4573683 (1981-06-01), Kawamura
Doyle et al., Chem. Abstracts, vol. 69, 2217z, 1968.
Bentley et al., Chem. Abstracts, vol. 75, 87977u, 1971.
Farbwerke; Hoechst, Chem. Abstracts, vol. 54, 4056d.

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