【摘要】 分析了小五金产品滚镀黄铜层易产生棕黑斑点的原因,论述了黄铜层出现棕黑斑点是零件基材腐蚀的开始。提出了控制黄铜层棕黑斑点形成和扩展的方法。更多还原

【Abstract】 Causes of brown or black spots in brass barrel plating of small hardware were analyzed and some counter measures were put forward. The appearance of brown or black spots on brass layer was a corrosion precursor of material matrix. The controlling method could only slow down the formation of spots on the brass layer but not eliminate quite.更多还原