Electropolishing aluminum and aluminum alloys

Details Electropolishing aluminum and aluminum alloys Electropolishing aluminum and aluminum alloys

1975-04-30

1976-07-20

Tufariello, T. M.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

20412995, C25F 300

Patent

active

039705293

ABSTRACT:
A process and bath for electropolishing and brightening aluminum and aluminum alloys. The bath preferably contains from about 30 percent to about 95 percent phosphoric acid and from about five percent to about 70 percent of a poly (alkylene ether). A minor amount, generally from about 0.05 to about two percent, of a wetting agent may be added to the bath if desired. The bath forms a protective foamy film over the part being electroplated, thereby protecting the part against chemical attack by the bath. Further, the polyether additives are chemically and thermally stable in the electrolyte under normal bath operating conditions. The bath may be operated at low voltages ranging from about 15 to 100 volts.

REFERENCES:
patent: 2461035 (1949-02-01), Clingan
patent: 2708655 (1955-05-01), Turner
patent: 3119726 (1964-01-01), King et al.
patent: 3627654 (1971-12-01), Petit et al.

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