Hot cathode, its production process and electron tube incorporat

Details Hot cathode, its production process and electron tube incorporat Hot cathode, its production process and electron tube incorporat

1980-11-05

1983-07-12

Dixon, Harold A.

Electric lamp and discharge devices

Electrode and shield structures

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

313346DC, 313348, H01J 114

Patent

active

043933289

ABSTRACT:
The hot cathode, according to the invention, is constituted by a fritted matrix 1 and a heating filament 4, said matrix being formed from a powder mixture 2 of tungsten and another high work function refractory metal and covered with a high work function refractory metal film 3. FIG. 3.

REFERENCES:
patent: 2581408 (1952-01-01), Hamilton
patent: 2864028 (1958-12-01), Coppola
patent: 2929133 (1960-03-01), Hughes
patent: 4101800 (1978-07-01), Thomas
patent: 4302702 (1981-11-01), Montgaillard et al.
"Reference Data for Engineers", 4th Edition, p. 43.

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