Capacitor foil of aluminum or an aluminum alloy

Details Capacitor foil of aluminum or an aluminum alloy Capacitor foil of aluminum or an aluminum alloy

1989-03-06

1990-04-10

Zimmerman, John J.

Electric heating

Metal heating

By arc

21912184, B23K 2612

Patent

active

049162853

ABSTRACT:
A capacitor foil made of aluminum or an aluminum alloy whose edge has been treated using a LASER beam exhibits practically no burrs or cracks, as a result of which an increase in the nominal field strength of capacitors made with such a foil becomes possible. A further increase in the nominal field strength is achieved by creating at least one edge with a LASER beam which is enclosed in a reactive gas or gas mixture having a concentration of oxygen greater than the concentration of oxygen in air.

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De Silva et al., "The Fabrication of Foil Masks Using Laser Cutting", Thin Solid Films, 77 (1981), pp. 341-346.

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