Aluminum alloy foil for high voltage electrolytic capacitors

Details Aluminum alloy foil for high voltage electrolytic capacitors Aluminum alloy foil for high voltage electrolytic capacitors

1975-01-16

1976-12-14

Rutledge, L. Dewayne

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

75146, 317230, C22C 2100

Patent

active

039973395

ABSTRACT:
An aluminum alloy foil for a high voltage electrolytic capacitor in which the foil contains one or more of the elements, antimony, barium, and zinc in quantities 5 to 200 ppm. and at the most 0.5 ppm. of lead and bismuth plus at the most 2 ppm. of calcium and chromium. The resulting foil has a greatly improved etching pore density.

REFERENCES:
patent: 2886432 (1959-05-01), Schmitt et al.
patent: 3321306 (1967-05-01), Reding et al.
patent: 3351442 (1967-11-01), Hooper
patent: 3464909 (1969-09-01), Yanagida et al.

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