Sharpening metal carbide emitters

Details Sharpening metal carbide emitters Sharpening metal carbide emitters

2007-10-25

2010-11-09

Santiago, Mariceli (Department: 2879)

Electric lamp or space discharge component or device manufacturi

Process

Electrode making

C445S049000, C445S051000

Reexamination Certificate

active

07828622

ABSTRACT:
A method for sharpening a metal carbide emitter tip is disclosed. The metal carbide emitter tip is exposed to an oxygen rich, low vacuum environment when the metal carbide emitter tip is at a first temperature. The metal carbide emitter tip is rapidly heated to a higher second temperature at regular intervals of time.

REFERENCES:
patent: 53038256 (1978-04-01), None
patent: 54134964 (1979-10-01), None
patent: 59071232 (1984-04-01), None
patent: 11204078 (1999-07-01), None
Kerji Yada, “A New Preparation Method of Refractory Carbides and Their Thermionic Emission Properties”, Journal of Electron Microscopy, vol. 31, No. 4, pp. 349-359, 1982.

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