Process for coating aluminum or aluminum alloy

Details Process for coating aluminum or aluminum alloy Process for coating aluminum or aluminum alloy

1974-05-28

1976-06-15

Williams, Howard S.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

C25D 1306, C25D 1310, C25D 1320

Patent

active

039635686

ABSTRACT:
In coating aluminum or aluminum alloy by contacting the aluminum or aluminum alloy with hot water or steam to form an aluminum oxide layer on its surface and thereafter electrophoretically coating the aluminum or aluminum alloy with an electrophoretic coating composition to form a resin layer, a process which is characterized in that said electrophoretic coating composition contains at least one water-soluble salt of an oxyacid selected from the group consisting of silicic acid, boric acid, phosphoric acid, vanadic acid, tungstic acid, permanganic acid, molybdic acid and stannic acid.

REFERENCES:
patent: 3544440 (1970-12-01), Weigel
patent: 3622473 (1971-11-01), Ohta et al.
patent: 3645872 (1972-02-01), Weigel

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