添加剂对甲基磺酸盐镀锡液性能的影响  

Effects of Additives on Performance of Methanesulfonate Tin Coating from Acidic Bath

作　　者：张著[1] 龙晋明[2] 郭忠诚[1] 姜妍妍[1] 李远会[1] 

机构地区：[1]昆明理工大学冶金与能源工程学院,云南昆明650093 [2]昆明理工大学材料科学与工程学院,云南昆明650093

出　　处：《电镀与环保》2011年第5期13-16,共4页Electroplating & Pollution Control

基　　金：锡电镀体系应用技术研究(6193-20100099);昆明理工大学分析测试基金(2010228);稀贵及有色金属先进材料教育部重点实验室;云南省新材料制备与加工重点实验室测试基金(20102281)

摘　　要：甲基磺酸盐镀锡液是一种环保、稳定、性能优良的新型镀锡体系,选择适宜的添加剂并确定其质量浓度是保证镀锡层质量的关键。借助于电化学测试、赫尔槽实验、远近阴极法、内孔法和扫描电镜等方法,考察了几种添加剂单独和复合使用时对镀液性能和镀层表面质量的影响。结果表明:OP乳化剂和试剂A可显著提高Sn2+还原时的阴极过电位,试剂B对获得光亮镀层起到辅助作用;使用由OP乳化剂、试剂A和试剂B组成的复合添加剂能明显改善镀液的极化性能,获得光亮、平整、结晶细致的镀锡层。同时该镀液体系的均镀能力和深镀能力良好,具有一定的生产应用价值。Methyl sulfonic acid tin plating bath is a new type tin plating system,which is environment-friendly,stable,and good in performance.The key to ensure the quality of tin deposit is to select appropriate additives and determine suitable mass concentration.The effects of several additives on bath performance and coating quality when used separately and compositely were investigated by electrochemical testing,Hull cell test,distant near cathode method,inner hole method and SEM.The results show that,emulsifier OP and additive A can remarkably increase the cathodic overpotential when Sn2＋ ions are reduced,and additive B has an auxiliary role to obtaining bright deposit.The cathodic polarization performance of the electrolyte can greatly be improved by a composite additive composed of OP,additive A and additive B,with which a bright,smooth,fine and compact tin deposit can be obtained.The electrolyte system also has good covering power and throwing power,possessing a certain value for productive applications.

关 键 词：甲基磺酸亚锡 镀液性能 镀锡 

分 类 号：TQ153[化学工程—电化学工业]