脉冲电沉积法制备Al基Pb—WC—Ce02复合惰性阳极

为了制备性能优良的Al基Pb—WC—CeO：惰性阳极材料，考察了WC、CeO：颗粒浓度对阴极极化的影响，正向脉冲参数、温度和搅拌对沉积速率以及复合镀层表面形貌的影响，并研究了其在锌电解液中的耐蚀性能，确定了脉冲电沉积制备Al基Pb-WC-C02复合镀层的最佳工艺条件：基础镀铅液中添加40g／LWC（粒径1斗m），30g...

Preparation of Aluminum - Based Lead - Tungsten Carbide-Cerium Dioxide Composite Inert Anode by Pulse Electrodeposition

Al - based Pb - WC - CeO₂ composite inert anode was prepared by pulse electrodeposition.The influence of mass fraction of WC and CeO₂ on cathodic polarization as well as the influence of forward pulse plating parameters, temperature and stirring speed on deposition rate and surface morphology of as - deposited composite coating was studied.At the same time,the corrosion resistance of as - deposited composite coating in zinc -electrolysis solution was investigated.It was found that Pb-WC-CeO₂ composite coating with good appearance quality and corrosion resistance could be prepared on Al base by introducing 40 g/L WC（1μm）,30 g/L CeO₂（20-30 nm） and 0.5¹.0 g/L hexadecyl trimethyl ammonium bromide into routine lead - electroplating bath,and pulse electroplating at a forward duty cycle of 30%,forward working time of 400 ms, average forward current density of 0.8 A/dm²,temperature of 40℃and stirring speed of 300 r/min.Resultant Pb-WC-CeO₂ composite coating had better corrosion resistance dian Pb coating and Pb-WC coating in zinc - electrolysis solution.Meanwhile,as compared with the same composite coating obtained by direct current electroplating,pulse electroplated composite coating was more uniform and better covered by Pb,and had a larger grain size as well as better corrosion resistance.