阴极等离子体电解沉积工艺参数对放电与沉积过程的影响  

Effects of Parameters of Cathodic Plasma Electrolytic Deposition on the Process of Discharge and Deposition

作　　者：杨建明[1] 陈田[2] 陈劲松[3] 张迪湦 马超[2] 

机构地区：[1]淮海工学院机械工程学院,江苏连云港222005 [2]中国矿业大学机电工程学院,江苏徐州221116 [3]江苏省海洋资源开发研究院绿色过程与工程研发中心,江苏连云港222005

出　　处：《中国表面工程》2016年第1期73-79,共7页China Surface Engineering

基　　金：国家自然科学基金(51105162);江苏省博士后研究基金(1302084C)

摘　　要：为进一步认识和控制阴极等离子体电解沉积过程,研究了工艺条件对锌沉积时放电和沉积过程的影响,用扫描电镜和金相显微镜分别观察沉积层的表面和截面形貌,用能谱仪和X射线衍射仪进行沉积层元素和物相分析。结果表明,极间电压增大到约200V以上的某一电压值时阴极上发生等离子放电,初始放电电压与电解槽中的溶剂种类、氯化钠添加量有关,随乙醇和氯化钠添加量的增大而降低。要在阴极上实现锌的沉积,就应控制工艺条件使初始放电电压尽量低,且极间电压宜维持在初始放电电压以上10~20V。采用水和乙醇混合作溶剂比只用水作溶剂容易实现稳定的阴极沉积,沉积层厚度明显大,但沉积物表面的颗粒较粗大,致密性要差。To have a better understanding and controlling of the process of cathodic plasma electrolytic deposition,the effect of technological condition on the process of discharge and deposition during zinc deposition was studied.Surface morphology and cross section morphology of the deposition layer were observed by SEM and metallographic microscope,repectiviely,and components and phase of the layer were tested by EDS and XRD,respectively.The results show that plasma discharge occurs on the cathode when the interelectrode voltage increases to a certain value of about more than200 V.The initial discharge voltage is related to solvent types and additive amount of the sodium chloride in the electrolytic cell,and decreases with increasing additive amount of ethanol and sodium chloride.To realize zinc deposition on the cathode,the initial discharge voltage should be as low as possible by controlling technological condition,and the interelectrode voltage is required to be 10-20 Vhigher than the initial discharge voltage.By using water and ethanol rather than only water as the solvent,the cathode deposition is likely to be stable,and the deposition layers are obviously thicker;however,the deposition surface is relatively bulky and less compact.

关 键 词：阴极等离子体 电解沉积 液相放电 初始放电电压 

分 类 号：TG174.44[金属学及工艺—金属表面处理]