【摘要】 采用极化曲线和循环伏安法研究了Ti基Pt–Ir–Ta–Sn氧化物涂层阳极在铜和镍电镀液中的电化学行为,并探讨了铝轮毂电镀前处理工艺、电镀添加剂、氯离子对其强化寿命的影响。结果表明,Ti基Pt–Ir–Ta–Sn氧化物涂层阳极的电催化性能与强化寿命都优于Ti基镀Pt阳极,镀液中的添加剂、氯离子使涂层阳极的强化寿命明显缩短;前处理液侵蚀氧化物涂层表面,但对涂层阳极的强化寿命影响不大。在1 mol/L H2SO4溶液中以电流密度4 A/cm2电解,Ti基Pt–Ir–Ta–Sn氧化物涂层阳极的强化寿命可达147 h。更多还原

【Abstract】 The electrochemical behavior of Ti-based Pt–Ir– Ta–Sn oxide-coated anode in copper and nickel plating baths was studied.The effects of pretreatment for plating aluminum hub,plating additives and chloride ion on the accelerated life of the anode were discussed.The results showed that the electrocatalytic activity and accelerated life of Ti-based Pt–Ir–Ta–Sn oxide-coated anode are superior to Pt-plated Ti anode.The additives and chloride ion in plating bath shortened the accelerated life of oxide-coated anode remarkably.The pretreatment solutions corrode the surface of oxide-coated anode,but slightly affect its accelerated life.The accelerated life of Ti-based Pt–Ir–Ta–Sn oxide-coated anode is 147 h in 1 mol/L H2SO4 solution at 4 A/cm2.更多还原