Process for treating the surface of aluminum or aluminum alloy

Details Process for treating the surface of aluminum or aluminum alloy Process for treating the surface of aluminum or aluminum alloy

1977-06-13

1978-08-08

Mack, John H.

Chemistry: electrical and wave energy

Processes and products

204 58, C25D 1106

Patent

active

041055110

ABSTRACT:
A process for treating the surface of aluminum or aluminum alloy comprising the steps of contacting aluminum or aluminum alloy with hot water or steam to form an aluminum oxide layer thereon and conducting electrolysis using the resulting aluminum or aluminum alloy as an anode by applying direct current in an aqueous solution consisting essentially of a water-soluble salt of at least one oxyacid selected from the group consisting of silicic acid, phosphoric acid, molybdic acid, vanadic acid, permanganic acid, stannic acid and tungstic acid.

REFERENCES:
patent: 1068410 (1913-07-01), Chubb
patent: 1850298 (1932-03-01), Washington, Jr.
patent: 2116449 (1938-05-01), Robinson
patent: 2859148 (1958-11-01), Altenpohl
patent: 2868702 (1959-01-01), Brennan
patent: 2981647 (1961-04-01), Schwartz
patent: 3834999 (1974-09-01), Hardcousky et al.
patent: 3836437 (1974-09-01), Osada et al.

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