Low voltage hard anodizing process

Details Low voltage hard anodizing process Low voltage hard anodizing process

1978-05-18

1979-01-09

Andrews, R. L.

Chemistry: electrical and wave energy

Processes and products

204DIG8, C25D 1104

Patent

active

041337255

ABSTRACT:
A process for hard anodizing of aluminum and aluminum alloys by use of a low voltage having a DC component and a superimposed AC component. The electrolyte can have relatively low acid concentration and can be of higher temperature than usually employed for hard anodizing.

REFERENCES:
patent: 2743221 (1956-04-01), Sanford
patent: 2897125 (1959-07-01), Franklin
patent: 2905600 (1959-09-01), Franklin
patent: 2977294 (1961-03-01), Franklin
patent: 3020219 (1962-02-01), Franklin
DFBO-Mitteilungen, "Hartanodisation mit Wechsel-stromubertagerung," Sep. 10, 1973, pp. 174-182.
Light-Metals, "Hard Surfacing Light Alloy by Anodizing," Feb. 1952, pp. 46-48.

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