Acidic sulfate containing bath for the electrodeposition of zinc

Details Acidic sulfate containing bath for the electrodeposition of zinc Acidic sulfate containing bath for the electrodeposition of zinc

1987-05-29

1988-05-24

Kaplan, G. L.

Chemistry: electrical and wave energy

Processes and products

C25D 356

Patent

active

047464119

ABSTRACT:
Bright electrodeposits of zinc/iron alloys onto iron of good ductility and adhesion are obtained at low electroplating voltage and high current yield by using a bath containing zinc sulfate, ferrous sulfate, conductive salt, citric acid and alkali metal acetate and, as additional ingredients, saccharin, a naphthalene mono-, -di- or -trisulfonate or a condensation product thereof with formaldehyde and/or an organic complexing agent for iron and further one or more compounds selected from the group consisting of alkali metal cumene sulfonate, alkali metal benzoate, collagen hydrolyzate having a mean molecular weight of from 500 to 2000 and a reducing agent for ferric irons selected from the group consisting of alkali metal bisulfite, alkali metal dithionite and hydroxy ammonium chloride.

REFERENCES:
patent: 2809156 (1957-10-01), Safranek
patent: 4488942 (1984-12-01), Martin et al.
patent: 4540472 (1985-09-01), Johnson et al.
patent: 4541903 (1985-09-01), Kyono et al.
patent: 4578158 (1986-03-01), Kanamaru et al.

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