Selective electrolytic stripping of metal coatings from base met

Details Selective electrolytic stripping of metal coatings from base met Selective electrolytic stripping of metal coatings from base met

1986-04-22

1987-07-07

Tufariello, T. M.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

C25F 500

Patent

active

046785523

ABSTRACT:
Metal coatings are stripped from base-metal substrates in an electrolytic process employing an aqueous solution of alkanesulfonic acid of 1 to 4 carbons as the electrolyte at a concentration of from about 45 to about 70 weight percent, the coated base-metal substrate as the anode, and an electroconductive cathode, by impressing an electromotive force across the solution between the electrodes until the current decreases to zero which occurs when the metal coating on the anodic material is depleted and the base-metal substrate is left exposed.

REFERENCES:
patent: 2525942 (1950-10-01), Proell
patent: 2706171 (1955-04-01), Goral et al.
patent: 3649489 (1972-03-01), Dillenberg
patent: 4356069 (1982-10-01), Cunningham
patent: 4539087 (1985-09-01), Pojbics
S. Sriveeraraghavan et al, "Anodic Stripping of Nickel From Copper or Brass", Met. Finishing, vol. 83, No. 10, pp. 41-43 (1985).

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