电镀科技论文.doc

用赫尔槽研究钾盐镀锌光亮剂用量及镀液分散能力 刘峰 娄利利 （郑州轻工业学院，郑州450002） 摘要：： Using hull slot to research the quantity of the brightener during potasslum galvanized experiment and solution scattered ability Liu feng Lou li li （Zheng zhou university of light industy，Zheng zhou 450002） Abstract：Hull cell is the use of current density in the distance, the cathode on the distribution of the different principles, Designed as a flat anode and cathode consisting of a certain slope of a small test tank, Similar trapezoidal shape, also known as the trapezoidal groove. This study should focus on understanding the structure and use of Hull cell, In Hull tank of five iron plates with different amounts of potassium zinc brightener for, by observing the state of the coating and thus the amount of potassium zinc brightener in the size of the impact of zinc results; In the experiment, learn to use magnetic thickness required, potassium and zinc by measuring the thickness of the film after the case of iron, Distributed computing ability, determination of Hull cell spread capabilities of the principles of the bath. The results show that when we add different amount of the brightener , The coating quality what we get is different , at the same time , the scattered ablitity of the solution is also different . Keywords：hull cell, brightener, dispersive power, electroplate, Potassium zinc 1引言 光亮剂可以使镀层变得光亮细致，钾盐镀锌电解液依赖于光亮剂提高阴极极化，获得平整、光亮的镀层。如果没有光亮剂时，所得到的镀层是粗糙、疏松呈海绵状的镀层。但光亮剂过多，易造成镀层结合力差，起泡和脆性增加，光亮剂含量过低，则会使镀层光亮性变差，低电流区镀层发暗。本实验采用赫尔槽装置来研究钾盐镀锌光亮剂用量，并采用磁性测厚仪来测试电镀试片的厚度，计算镀液分散能力。 2.1实验仪器和用品 DH1718/4稳压稳流电源2台，250mL赫尔槽1个，电吹风机1个，测厚仪1台，水砂纸（180#、200#、240#、400#）各一张，金相砂纸（1-6#）各一张，滤纸若干，精密pH试纸（5.0-6.0）若干，广泛试纸若干，导线若干，接线勾、鳄鱼夹若干，阳极试片（锌片），阴极试片（铁片）5片，活性碳20g双氧水10mL，滴瓶若干，滴管若干，玻璃棒1支，温度计1支。 2.2基础工艺配方 （1）酸洗除锈：盐酸 100-200g/L，硫酸 100-200g/L，若丁 0,5-3g/L，温度 室温，时间，除尽为止。 （2）电化学出油：氢氧化钠 10-20g/L，磷酸钠 20-30g/L，碳酸钠 20-30g/L，电流密度 5-10A/dm3时间 阳极5-10min 阴极 0.5min，温度70-80℃。 （3） 活化处理：盐酸 5-10%（质量） 时间 0.5-1min。 （4） 钾盐镀锌电解液：氯化锌 65-100g/L，氯化钾 175-220g/L，硼酸 20-25