Method of applying a thermally black layer to a heating member f

Details Method of applying a thermally black layer to a heating member f Method of applying a thermally black layer to a heating member f

1989-09-20

1991-01-08

Morgenstern, Norman

Coating processes

Electrical product produced

Electron emissive or suppressive

4271264, 427111, 427190, 427191, 427201, 427216, 427220, 427221, 4273762, 4273763, 313337, B05D 512, B05D 714, H01J 120

Patent

active

049834207

ABSTRACT:
A filament for an indirectly heated cathode is coated with a tungsten-aluminium oxide suspension, the tungsten particles being stabilized by a chemisorbed monomolecular layer of an aliphatic monocarboxylic acid such as stearic acid.

REFERENCES:
patent: 3016311 (1962-01-01), Stackhouse
patent: 3075066 (1963-01-01), Yenni et al.
patent: 3102044 (1963-08-01), Joseph
patent: 3770601 (1973-11-01), Maan et al.

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