| 摘要 |
PROBLEM TO BE SOLVED: To provide a post-processing method for electroless tin plating capable of preventing generation of white fine particles on a plated surface during the water rinsing after the tin plating without impairing the storage stability of the plated surface. SOLUTION: The post-processing method for electroless tin plating performs the post-processing of cleaning a plated surface with an acid electroless tin plating liquid without any degradation different from a plating liquid used in a plating step after the plating step with the acid electroless tin plating liquid and before the water rinsing step in an electroless tin plating method for immersing an object to be plated in the acid electroless tin plating liquid, and water-rinsing and drying the object. Since the object is not water-rinsed immediately after the plating but cleaned with the electroless plating liquid without degradation, quadrivalent tin salt on a coating film is dissolved in the acid plating liquid, and removed from the coating film, and coagulation of white fine particles after water rinsing can be excellently prevented. COPYRIGHT: (C)2007,JPO&INPIT
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