Ni-Fe-TiO_2复合镀层制备工艺研究  

Study on the preparation process of nickel-iron-titania composite coating

作　　者：王亚玲[1] 陈范才[1] 张小华[1] 文家新[1] 胡小东[1] 

机构地区：[1]湖南大学化学化工学院,湖南长沙410082

出　　处：《电镀与涂饰》2008年第5期6-8,共3页Electroplating & Finishing

摘　　要：采用电沉积方法在低碳钢上制备了Ni–Fe–TiO2复合镀层。研究了镀液中TiO2微粒含量、电流密度、温度、搅拌速率等工艺条件对复合镀层析氢性能的影响。结果表明,在温度为30°C,TiO2加入量为50g/L,电流密度为25mA/cm2,搅拌速率为300r/min时,可获得活性最佳的复合镀层。扫描电镜观察表明,镀层外观均匀,但微观表面粗糙。A Ni-Fe-TiO2 composite coating was electrodeposited on low-carbon steel substrate. The effects of technological parameters, such as TiO2 particle concentration in bath, current density, temperature and stirring rate, on the hydrogen evolution performance of the composite coating were studied. The results showed that the Ni-Fe-TiO2 composite coating with optimal activity can be obtained with an addition of 50 g/L TiO2 in bath, at a temperature of 30℃, current density 25 mA/cm^2 and stirring rate 300 r/min. The SEM observation indicated that the composite coating has a uniform appearance but a coarse surface microscopically.

关 键 词：镍铁合金 二氧化钛 复合镀 析氢 电催化活性 

分 类 号：TQ153.2[化学工程—电化学工业]