为了提高离子液体体系中镀铝层的致密性、均匀性和金属光泽度,配制了尿素-NaBr-KBr-甲酰胺-AlCl3低温离子液体,在铜基体上电镀铝.采用SEM、XRD等手段对镀铝层的形貌及晶型结构进行表征,考察了电流密度、电镀时间、温度及供电形式等对电镀铝的影响.结果表明:尿素-NaBr-KBr-甲酰胺-AlCl3离子液体的电导率随温度的升高而升高；脉冲电镀铝层性能优于直流电镀铝层；在电流密度50 mA/cm2,温度70℃,时间45 min条件下,利用数控脉冲电镀电源(ton =2 ms,toff =8 ms)在该离子液体中进行脉冲电镀,所得镀铝层结合力较好且镀层光亮、致密均匀、电结晶较好、纯度高,单质铝优先沿(200)晶面生长.
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