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Plating Zinc onto Platinum Wire

Q. Zinc plating platinum alloys. Should we use Acid, Alkaline or cyanide based solution. We are researching plating a 479 Platinum fine size wire. The Zinc will only be 10-30 microinches in thickness.

Christel Bitz
- Mount Vernon, New York, USA

"Electroplating Engineering Handbook"
by Larry Durney

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A. I have not found a reference, but I am guessing that the hydrogen overvoltage is low enough that you will not deposit any metals from an aqueous solution, instead just reducing hydrogen.

Tom Pullizzi
Falls Township, Pennsylvania

A. Try them all, but Acid would be fine, especially for a high-speed reel-to-reel wire rig.

Dave Kinghorn
Chemical Engineer
SUNNYvale, California

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