Thin film structure on a ribbon substrate for electric component

Details Thin film structure on a ribbon substrate for electric component Thin film structure on a ribbon substrate for electric component

1979-03-20

1980-10-21

Lawrence, Evan K.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

427 99, 428209, 428211, B32B 310

Patent

active

042294762

ABSTRACT:
In the manufacture of devices using a metal film deposited on a substrate of paper or synthetic resin sheet or strip material, an advantage has been found with respect to promoting adherence and resisting corrosion, when an intermediate layer is used that does not completely cover the substrate but leaves gaps between covered areas or islands. The top layer, which covers the exposed areas of the substrate and the intermediate layer, is aluminum, zinc, cadmium or zinc-cadmium. The patchy intermediate layer is an oxide or a mixture of oxides of tungsten, lead, antimony, bismuth. Oxides of certain other metals and silicon and boron oxides are also usable. Both the oxide layer and the metal layer can be vapor-deposited on a moving strip of the substrate at a foreign gas pressure of up to 1 torr. in a single pass of the substrate strip through the vacuum chamber. The oxide can be thermally deposited by vaporizing the oxide in question in vacuum or it can be formed by the action of residual oxygen or water vapor on the corresponding atoms of pure metals vaporized in the vacuum for deposition.

REFERENCES:
patent: 2482054 (1949-09-01), Colbert
patent: 2748031 (1956-05-01), Katig
patent: 3053698 (1962-09-01), Ogle
patent: 3076727 (1963-02-01), Harwig
patent: 3152035 (1964-10-01), Kirschner

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