通过偶接金属铝,采用化学沉积方法制备Fe-W-P三元合金镀层,用电化学方法研究了镀液组成对Fe-W-P化学沉积行为的影响,并分析了偶接金属铝对合金沉积的诱导作用,对合金沉积的机理进行了初步探讨.结果表明,改变镀液组成和沉积工艺,沉积电位和沉积电流随之变化,增大镀液中NaOH和还原剂NaH2PO2·H2O的浓度,沉积电位负移,沉积速率增大,而随着钨酸钠的加入镀层的沉积速率稍有下降,表明钨酸钠对Fe-W-P的化学沉积有一定的抑制作用.偶接金属铝使体系的电位负移,降低了阴阳极极化电阻,诱导了Fe-W-P三元合金的共沉积.
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