Scandate cathode and methods of making it

Details Scandate cathode and methods of making it Scandate cathode and methods of making it

1992-08-17

1994-05-24

Ramsey, Kenneth J.

Electric lamp or space discharge component or device manufacturi

Process

Electrode making

313346DC, H01J 904

Patent

active

053143647

ABSTRACT:
To maintain a monolayer of scandium, which is necessary for a satisfactory emission on the surface of a scandate cathode, at least the top layer of the cathode is provided with a scandium-containing oxidic phase from which Scandium is supplied by segregation of scandium from this oxidic phase.

REFERENCES:
patent: 4350920 (1982-09-01), Bertens
patent: 4594220 (1986-06-01), Hasker et al.
patent: 5006753 (1991-04-01), Hasker et al.
patent: 5064397 (1991-11-01), Hasker et al.
patent: 5114742 (1992-05-01), Branovich et al.
Hasker et al "Properties and Manufacture of Top-Layer Scandate Cathodes" Applied Surface Science 26(1986); 173-195.

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