Applying a tapered electrode on a porous ceramic support tube by

Details Applying a tapered electrode on a porous ceramic support tube by Applying a tapered electrode on a porous ceramic support tube by

1991-01-15

1991-12-17

Beck, Shrive

Coating processes

Electrical product produced

Hollow article

427115, 427181, 427203, 427238, 427282, 427287, 4273763, 427294, B05D 512

Patent

active

050734059

ABSTRACT:
An electrode is deposited on a support by providing a porous ceramic support tube (10) having an open end (14) and closed end (16); masking at least one circumferential interior band (18 and 18') inside the tube; evacuating air from the tube by an evacuation system (30), to provide a permeability gradient between the masked part (18 and 18') and unmasked part (20) of the tube; applying a liquid dispersion of solid electrode particles to the outside surface of the support tube, where liquid flows through the wall, forming a uniform coating (42) over the unmasked support part (20) and a tapered coating over the masked part (18 and 18').

REFERENCES:
patent: 2730462 (1956-01-01), Ewing
patent: 3028266 (1962-04-01), Larsh
patent: 4395468 (1983-07-01), Isenberg
patent: 4414337 (1983-11-01), Ichikawa et al.
patent: 4490444 (1984-12-01), Isenberg

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