Impregnated cathodes with a controlled porosity

Details Impregnated cathodes with a controlled porosity Impregnated cathodes with a controlled porosity

1991-10-16

1992-06-02

Rowan, Kurt

Electric lamp or space discharge component or device manufacturi

Process

Electrode making

419 35, 445 49, 445 51, H01J 904

Patent

active

051183170

ABSTRACT:
A storage cathode comprising a porous, sintered body of a refractory metal is produced by compacting and sintering powder particles of a refractory metal, at least a portion of which are coated, before compacting, with a thin layer of a ductile metal. As a result thereof, it is possible to compact the refractory metal powder, before sintering, at temperatures lower than 600.degree. C., in a non-conditioned space and in an air atmosphere.

REFERENCES:
patent: 927935 (1909-07-01), von Bolton
patent: 2986465 (1961-05-01), Kurtz
patent: 3015560 (1962-01-01), Thurber
patent: 3155864 (1964-11-01), Coppola
patent: 3303559 (1967-02-01), Holtzclaw
patent: 3418103 (1968-12-01), Lasdon
patent: 3623198 (1971-11-01), Held
patent: 3971110 (1976-07-01), Thomas et al.
patent: 4498395 (1985-02-01), Kock et al.
patent: 4708681 (1987-11-01), Branovich et al.

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