为了提高镀锡板产品质量,降低生产成本,研究了电镀锡溶液组成、电流密度、温度等电镀工艺条件对镀锡板孔隙率的影响。结果表明:镀锡液各成分对镀锡板孔隙率的影响次序是EN〉PSA〉ENSA〉Sn2+;最优配方是5g/LENSA,5g/LEN,16g/LPSA,22g/LSn2+;随着电流密度从0.5A/dm2增加到3.0A/dm2,电沉积的锡晶粒度逐渐细化,孔隙率逐渐降低,至3.0A/dm2时,锡晶粒度最小,孔隙率也最小;随着镀液温度的升高,镀锡板铁溶出值(PHG)值先减小,后增大,在40℃附近出现了最小值。
参考文献
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[2] | Yoshida M;Morita J;Higashi M et al.Influence of Plating Conditions of the Lightly Tin Plated Steel Sheet on the Alloying Behavior[J].Transactions of the Iron and Steel Institute of Japan,1986,26(02):66. |
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[4] | George A;Federman L.A Comparative Study of the Effects of Metallic Impurities on MSA- & PSA-based Tin Electrolyres[A].London,ITRI,1992:88. |
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