化学镀Fe-P合金在NaOH溶液中的腐蚀行为研究  

Investigation on the Corrosion Behavior of Electroless Fe-P Deposits in NaOH Solution

作　　者：王巧玲[1] 黄桂芳[2] 叶姣[2] 汤杨[1] 杨冰[1] 乐毅[3] 

机构地区：[1]长沙环境保护职业技术学院,湖南长沙410004 [2]湖南大学,湖南长沙410082 [3]长沙矿冶研究院,湖南长沙410012

出　　处：《矿冶工程》2007年第4期67-70,共4页Mining and Metallurgical Engineering

摘　　要：用化学镀的方法制备Fe-P合金,分析化学镀层在1mol/LNaOH介质中的腐蚀行为。试验结果表明,镀液pH值的变化引起化学沉积速率的变化,随着镀液pH值的增大,化学镀铁的沉积速率先增后降;不同pH值镀液所制备的镀层在NaOH溶液中腐蚀电位存在差异,这可归于镀层中磷含量的不同;电化学测试表明,镀层试样在NaOH溶液中的极化曲线上出现若干个阳极电流峰,表明多个阳极反应的存在,镀层发生氧化反应生成铁的氧化物或氢氧化物;循环伏安曲线中阴、阳极峰电流的不同以及不同扫描速度下峰电位的变化,说明镀层的腐蚀反应为不可逆反应。Fe-P alloy was prepared by electroless deposition and the corrosion behavior of electroless Fe-P deposits in 1 mol/L NaOH media was investigated by electrochemical method. The results show that the deposition rate changes with pH of the plating solution. The deposition rate of electroless Fe first increased and then decreased with the increase of pH of the plating solution. The difference of corrosion potential in NaOH solution was due to the phosphor change in the deposit. From the polarization curves of Fe-P deposits in NaOH solution, there are several current peaks, suggesting that the appearance of new reaction or the change of surface state. The cyclic votammetry behavior at different scan rate of the deposits in NaOH solution shows that the oxidation reation is irreversible.

关 键 词：化学镀 Fe-P合金 腐蚀行为 NAOH 

分 类 号：TG174[金属学及工艺—金属表面处理]