期刊论文

中文

化学试剂

0258-3283

2011

33

2

152-156

10.3969/j.issn.0258-3283.2011.02.016

衡阳市工业科技支持计划项目（2009KG23、2009KG50） 衡阳帅范学院科学基金资助项目（09A32）.

本校为第一机构

运用循环伏安,交流阻抗和电势阶跃等电化学方法研究了酸性电解液中苄叉丙酮,香草醛和OP-10 3种有机添加剂对锌镍合金电沉积的作用机理.结果表明,加入有机添加剂后均能使锌镍合金电沉积电位负移,当苄叉丙酮和OP-10联合作用时,锌镍电沉积阴极超电势最大,并能有效阻化氢气析出,更有利于得到光亮锌镍合金镀层.同时伏安图上出现一感抗性电流环,说明锌镍电沉积过程中发生晶核形成过程;其氧化峰电位之差达0.55 V,说明其电极过程明显不可逆.加入有机添加剂后锌镍合金电沉积受电化学极化和浓差极化混合控制;且锌镍电沉积I2/I2m~t/tm实验曲线靠近瞬时成核理论曲线,说明在有机添加剂作用下锌镍合金的电沉积...

The mechanism of three kinds of organic additives including benzalacetone,vanillin and OP-10 on electrodeposition of zinc-nickel alloy in acidic electrolyte was investigated by electrochemical methods such as cyclic voltammetry,AC impedence,and electric potential step.The test results showed that the electrodeposition potential of zinc-nickel alloy shifted negatively in the presence of organic additives.The cathode overpotential of zinc-nickel electrodeposition was the greatest and the delivery of hydrogen was restrained effectively by the join...