Nickel sulfate coloring process for anodized aluminum

Details Nickel sulfate coloring process for anodized aluminum Nickel sulfate coloring process for anodized aluminum

1984-11-13

1985-12-17

Andrews, R. L.

Chemistry: electrical and wave energy

Processes and products

204 58, C25C 1122

Patent

active

045591148

ABSTRACT:
Anodized aluminum-based metal workpieces are colored in a nickel-based electrolytic coloring process in which the nickel ion is supplied in the form of nickel sulfate in acidic solution. Improvements in both throwing power and coloring rate are observed at elevated temperatures and nickel concentrations.

REFERENCES:
patent: 4021315 (1977-05-01), Yanagida et al.
patent: 4022671 (1977-05-01), Asada
patent: 4024039 (1977-05-01), Yoshida et al.

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