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《Materials Protection》 1992-01
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Bright Cu-Sn Alloy Electroplating Process using New Brighteners

Zhuang Ruifang  
A Process for electroplating of bright Cu-Sn (Sn 8~10 wt%) alloy from alkaline cyanide bath using new type brighteners (CSNU-A ,CSNU-B) has been studied. The relationship of Sn contents (wt. % ) in Cu-Sn alloy deposits varies with bath compositions and the operation conditions are discussed. The experimental results showed that this process using new type brighteners could give bright, uniform Cu-Sn alloy coating with good properties. It could be used as underplate for direct electroplating of decorative Cr or Ni/Cr without premechanical polishing procedure, The new process has obvious technical arid economical benefits for saving labour and materials.
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