过去有关丁基黄原酸添加剂对铜电沉积行为和电极过程影响的研究还不够.采用线性电位扫描(LSV)、计时电流(CA)、交流阻抗和Tafel极化曲线等电化学方法并结合金相显微镜,研究了添加剂丁基黄原酸的浓度对碱性HEDP(羟基乙叉二膦酸)体系镀铜电沉积过程的影响.结果显示:丁基黄原酸在阴极具有一定的吸附能力,对铜沉积有阻化作用,且丁基黄原酸浓度越大,阻化作用越强;铜电沉积的初期行为服从扩散控制和三维连续成核方式生长规律;丁基黄原酸能提高镀液的微观分散能力,使得镀层光滑而平整.
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