Method for electroplating with tin-zinc alloy
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United States of America Patent
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app pub date -
Feb 9, 2007
filing date -
Aug 10, 2004
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Abandoned
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Abstract
The object of the present invention is to provide an electroplating method that enables the high-speed treatment of articles to be plated that was difficult to achieve with the conventional tin-zinc electroplating. The present invention provides a method for electroplating with a tin-zinc alloy that is performed under the following conditions: plating bath temperature 30 to 90.degree. C., plating bath stirring rate 5 to 300 m/min, and cathode current density 5 to 200 A/dm.sup.2. Preferably, in the tin-zinc alloy plating bath, the divalent tin ion concentration is 1 to 100 g/L and the zinc ion concentration is 0.2 to 80 g/L.
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