Preparation of aluminum electrolytic capacitor foil

Details Preparation of aluminum electrolytic capacitor foil Preparation of aluminum electrolytic capacitor foil

1982-08-06

1984-01-17

Kaplan, G. L.

Chemistry: electrical and wave energy

Processes and products

204 37R, 204 58, C25D 544, C25D 550, C25D 1108

Patent

active

044262604

ABSTRACT:
The invention involves a method of preparing aluminum foil for use as an anode in electrolytic capacitors. The resultant electrolytic capacitor is improved by subjecting the etched aluminum foil to a heat treatment of 100.degree. to 600.degree. C. for about 10 seconds to 20 minutes prior to the treatment with nitric acid.

REFERENCES:
patent: 2396685 (1946-03-01), Coggins
patent: 2755237 (1956-07-01), Turner
patent: 2853445 (1958-09-01), Catotti et al.
patent: 2981647 (1961-04-01), Schwartz
patent: 3063832 (1962-11-01), Snyder
patent: 3330743 (1967-07-01), Jestl et al.
patent: 3988217 (1976-10-01), Ikegaya
Georgio; A. M., "The Electrolyte Capacitor", N.Y., Murray Hills Books, 1945, pp. 22-25 and 55-61.

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