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hei se guang liang sn-ni he jin dian du
Author(s): 
Pages: 70-72
Year: Issue:  4
Journal: Electroplating & Finishing

Keyword:  合金电镀Sn-Ni合金电流密度范围镀层外观亚锡盐大电流密度施镀焦磷酸亚锡黑度电镀液;
Abstract: <正> 获得黑色镀层的镀黑铬法及镀黑镍法已为人们所熟知。但是前者难以得到外观均匀、黑度一致的镀层,要在大电流密度下施镀;镀液维护管理复杂,且六价铬对环境也有严重污染危害;而后者则有电流密度范围窄、色度不匀、镀层机械强度差、抗蚀性,耐变色性不良的缺点。
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