同时采用小槽和Hull Cell试验,并结合稳态极化法、电势阶跃法以及SEM等测试手段,研究了光亮剂对全硫酸盐体系中三价铬电沉积行为的影响.结果表明:光亮剂的光亮效果是一个综合效应,而不是一种光亮剂的作用结果;在E＜-0.10 V的区间内,光亮剂能明显地增大阴极极化;光亮剂的加入,使镀液在4.00～22.50 A/dm2区域内能得到光亮的镀层;并且光亮剂的加入不会改变三价铬镀铬的电沉积行为,与未加光亮剂时一样仍遵循瞬时成核机理.
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