| 摘要 |
PROBLEM TO BE SOLVED: To provide a simple means for surely preventing the occurrence of whiskers after the performance of tin or tin alloy plating, even in the case it is left at room temperature for 5,000 hr. SOLUTION: The whisker preventive for tin or tin alloy plating comprises: (A) sulfuric acid, alkane sulfonic acid, alkanol sulfonic acid or their derivatives; (B) peroxide; and (C) metal ions whose electric potential is nobler than that of copper. In the whisker preventing method for tin or tin alloy plating, the stock to be plated is dipped into the whisker preventive for tin or tin alloy, and is thereafter subjected to tin or tin alloy plating. COPYRIGHT: (C)2006,JPO&NCIPI |
