2-巯基噻唑啉和咪唑在无氰碱性镀锌中的作用

The Functions of 2 Mercaptothiazoline and Imidazole in Zinc Plating from Nonocyanide Alkaline Solution

运用阴极极化法、旋转圆盘电极法和赫尔槽试验法研究了２－巯基噻唑啉、咪唑在无氰碱性镀锌中的作用．结果表明：２－巯基噻唑啉在高电流密度区增大了阴极极化，并在一定浓度范围内具有正整平能力；而咪唑在低电流区有去极化作用、在高电流区有增大极化作用．因而。

The function of 2 mercaptothiazoline and imidazole in Zinc plating from noncyanide alkaline solution were studied with cathodic polarization,rotating disk electrode and Hull cell testing methods.The experimental results showed,2 mercaptothiazoline raised cathodic polarization at high current area and exhibited a good leveling property within the range of concentration,and imidazole decreased at low current area and raised cathodic polorization at high current area. So they improved the throwing power of Zinc plating solution.