铝基体上电沉积Pb-Ag-Co合金及其腐蚀性能研究  

Study on the Corrosion Resistance of Pb-Ag-Co Alloy Electrodeposited on Al Substrate

作　　者：陈步明[1,2] 郭忠诚[1,2] 刘建华[1] 张永春[1] 杨海涛[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]昆明理工恒达科技有限公司,云南昆明650106

出　　处：《电镀与精饰》2014年第4期1-4,共4页Plating & Finishing

基　　金：国家自然科学基金项目(51004056);云南省应用基础研究基金项目(2010ZC052);昆明理工大学分析测试基金(2011170)

摘　　要：在铝基体上电沉积Pb-Ag-Co合金,并作为阳极用于锌电积中。通过正交试验采用五因素四水平,以腐蚀速率和表面形貌为主要考察指标,得到最佳的镀液组成及工艺条件:80g/L甲基磺酸铅,50g/L甲基磺酸,30g/L氢氧化钠,0.3g/L硝酸银,0.5g/L硫酸钴,0.3g/L明胶,20g/L硫脲,pH为0.5,Jκ为1A/dm2,θ为40℃。Pb-Ag-Co was electrodeposited on aluminum substrate,which was used in zinc electrowinning. Orthogonal experiment was determined by the best preparation process for the electrodeposition of Pb-Ag- Co alloy. The effects of process conditions on the coating composition, coating morphology and corrosion resistance of coatings were studied. The results showed that the optimal preparation conditions were as fol- lows ： 80 g/L （ CH3 SO3 ） 2 Pb; 50 g/L CH3 SO3 H, 30 g/L NaOH, 0.3 g/L AgNO3,0.5 g/L COSO4,20 g/L thiourea,0.3 g/L C102 H151 O39 N31 , pH = 0.5, cathode current density J = 1 A/dm2, temperature 40 ℃.

关 键 词：电沉积 Pb-Ag-Co合金镀层 耐腐蚀性 表面形貌 

分 类 号：TQ153.2[化学工程—电化学工业]