Cathode for electron emission

Details Cathode for electron emission Cathode for electron emission

1978-08-31

1981-03-24

Chatmon, Jr., Saxfield

Electric lamp and discharge devices

Electrode and shield structures

Point source cathodes

313346R, H01J 116, H01J 1910

Patent

active

042582830

ABSTRACT:
A cathode assembly for electron emission, comprises, a heatable support of high-temperature resistant material, an emitter body of lanthanum hexaboride, and an auxiliary body having a surface contact with both the support and the emitter body, which is made of a third material, comprising a sintered material of the class of carbides, nitrides and borides. The surface contact area between the auxiliary body and the support amounts to at least 1/6 of the surface area of the emitter body.

REFERENCES:
patent: 3312856 (1967-04-01), Lafferty et al.
patent: 3532923 (1970-10-01), Vogel
patent: 3631291 (1971-12-01), Favreau
patent: 3823337 (1974-07-01), Van Stratum et al.
patent: 3928783 (1975-12-01), Hosoki et al.
patent: 4054946 (1977-10-01), Ferris et al.
patent: 4055780 (1977-10-01), Kawai et al.
patent: 4068145 (1978-01-01), Nakagawa et al.
patent: 4137476 (1979-01-01), Ishii et al.

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