电沉积Zn-Ni多层膜的Ni含量及显微硬度  

Nickel Content and Microhardness of Electroplated Zinc-Nickel Multilayer Coatings

作　　者：闫宇星[1,2] 张英杰[2,3] 

机构地区：[1]曲靖师范学院化学化工学院,云南曲靖655011 [2]昆明理工大学冶金与能源工程学院,云南昆明650093 [3]云南民族大学民族药资源化学国家民委-教育部重点实验室,云南昆明650031

出　　处：《材料保护》2012年第10期7-9,3,共3页Materials Protection

基　　金：云南省自然科学基金(2009FXW002);云南省教育厅项目(2010[493])资助

摘　　要：通过单槽法成功制备出了Zn-Ni多层膜,利用扫描电镜SEM观察Zn-Ni多层膜的截面微观形貌,同时通过随机配带的X射线成分分析仪对镀层的镍含量做了分析;研究了平均电流、占空比、调制波长对多层膜硬度的影响。结果表明:峰值电流对多层膜中Ni的含量影响很大,峰值电流高时,Ni含量高;多层膜硬度也随峰值电流的增大而增大。Zn-Ni multilayer coatings were prepared with single bath electroplating method.The cross-sectional morphology of as-plated Zn-Ni multilayer coatings was observed with a scanning electron microscope,and the Ni content of the coatings was determined with an energy dispersive spectrometer.Furthermore,the effects of average current density,duty cycle,and modulation wavelength on the microhardness of as-plated Zn-Ni multilayer coatings were investigated.Results indicate that peak current density has significant effect on the Ni content of as-plated Zn-Ni multilayer coatings,and the coatings obtained under larger peak current density have higher microhardness.In the meantime,the microhardness of as-plated Zn-Ni multilayer coatings also rises with increasing peak current density.

关 键 词：电沉积 Zn—Ni多层膜 显微硬度 脉冲参数 

分 类 号：TQ153.2[化学工程—电化学工业]