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    • 79. 发明专利
    • Tin-silver alloy plating bath of non-cyanide system
    • 不含氰化物系统的锡银合金镀层
    • JP2006265572A
    • 2006-10-05
    • JP2005081043
    • 2005-03-22
    • Daiwa Fine Chemicals Co Ltd (Laboratory)Ishihara Chem Co Ltd株式会社大和化成研究所石原薬品株式会社
    • TANAKA SEICHUYOSHIMOTO MASAKAZU
    • C25D3/60
    • PROBLEM TO BE SOLVED: To improve solderability and appearance of an electrodeposition film obtainable from a tin-silver alloy plating bath of a non-cyanide system. SOLUTION: The tin-silver alloy electroplating bath contains (a) at least one aliphatic amino acids and nitrogenous aromatic carboxylic acids and (b) at least one aliphatic sulfides and aliphatic mercaptans. Glycines etc., are exemplified as the aliphatic amino acids of (a), picolic acid, 3-amino pyran-2-carboxylic acid, etc., as the nitrogenous aromatic carboxylic acids of (a), 4, 7-dithia decane-1, 10-diol, etc., as the aliphatic sulfides of (b), and thioglycol etc., as the aliphatic mercaptans. A sulfur compound of the component (b) is used as a stabilizer of the silver and further, the components (a), such as the glycines and picolic acids are used in combination, thereby satisfactorily improving the solder wettability and appearance of the tin-silver alloy film. COPYRIGHT: (C)2007,JPO&INPIT
    • 要解决的问题:提高由非氰化物体系的锡 - 银合金电镀液得到的电沉积膜的可焊性和外观。 解决方案:锡 - 银合金电镀浴含有(a)至少一种脂族氨基酸和含氮芳族羧酸,和(b)至少一种脂族硫化物和脂族硫醇。 甘氨酸等作为(a)中的脂肪族氨基酸,苦味酸,3-氨基吡喃-2-羧酸等作为(a)的4-芳香族羧酸, 作为(b)的脂族硫化物,和硫代乙二醇等作为脂肪族硫醇,可以使用1,10-二醇等。 使用组分(b)的硫化合物作为银的稳定剂,并且组合使用诸如甘氨酸和苦味酸的组分(a),从而令人满意地改善焊料润湿性和锡 - 银合金膜。 版权所有(C)2007,JPO&INPIT