AZ31镁合金环保型镀锌工艺的研究  

Environmentally Acceptable Zinc Electroplating Process for AZ31 Magnesium Alloy

作　　者：刘胜新[1] 陈永[1] 刘晓芳[1] 汪喜和[1] 关绍康[1] 

机构地区：[1]郑州大学材料科学与工程学院,河南郑州450002

出　　处：《材料保护》2008年第2期32-34,共3页Materials Protection

基　　金：河南省自然科学基金项目(411052100);郑州市重大科技攻关项目(052SGBG29052)

摘　　要：采用二次浸镀锌前处理，设计并优化了AZ31镁合金环保型电镀锌配方和工艺参数，得到最佳工艺条件为：8g/L氧化锌，100g／L氢氧化钠，6．0mL／LDEP—Ⅲ，4．0mL／LWBZ—Ⅲ，4g／L酒石酸钾钠，阴极电流密度2～A／dm^2，温度15～75℃，时间10～30min。在上述工艺下获得了均匀细致、对基体具有良好保护作用的镀锌层，显著提高了镁合金的耐腐蚀性和装饰性。TV bath formulation for environmentally acceptable zinc electroplating plating was designed and the process parameters were optimized in connection with double-zinc-dipping pre-treatment.The optimized bath formulation was determined to be composed of 8 g/L zinc white,100 g/L sodium hydroxide,6.0ml/L DEP-Ⅲ,4.0 mL/L WB/Ⅲ,and 4 g/L potassium sodium tartrate,while the optimized electroplating parameters were suggested as cathode current density of 2.5 A/dm2,temperature of 15-75 ℃,and duration of 10-30 min.The coating prepared under the optimized conditions was uniform and compact and had good protection to the substrate.Moreover,the coating was able to greatly improve the corrosion resistance and surface decoration performance of Mg alloy.

关 键 词：镁合金 环保 镀锌 表面处理 

分 类 号：TQ153.15[化学工程—电化学工业]