纳米结构黑镍薄膜的电沉积制备及其电化学行为

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Bibliographic Details
Published in中国有色金属学报：英文版 no. 8; pp. 2300 - 2306
Main Author 李建梅 蔡超 宋利晓 李劲风 张昭 薛敏钊 刘燕刚
Format Journal Article
LanguageEnglish
Published 2013
Subjects
电沉积
纳米黑镍薄膜
腐蚀
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Bibliography:43-1239/TG
Jian-mei LI, Chao CAI, Li-xiao SONG, Jin-feng LI2, Zhao ZHANG3, Min-zhao XUE1, Yan-gang LIU1 1. School of Chemistry and Chemical Technology, Shanghai Jiao Tong University, Shanghai 200240, China; 2. School of Materials Science and Engineering, Central South University, Changsha 410083, China; 3. Department of Chemistry, Zhejiang University, Hangzhou 310027, China
The electrodeposition and characterization of nano-structured black nickel coatings were presented. The influences of bath pH, electrodeposition time, stirring speed, temperature and current density on the color and microstructure of the electrodeposited nickel film were investigated through naked eyes, scanning electron microscopy （SEM） and X-ray diffraction （XRD） techniques. Meanwhile, the corrosion resistance of the optimized black nickel film was evaluated by the polarization measurement and electrochemical impedance spectroscopy （EIS） in the neutral 3.5% NaC1 solution. The results show that the color of the electrodeposited nickel film was highly dependent on the above technological parameters. The operating parameters were optimized mainly according to the color. The optimized black nickel film possesses nano-structure with an average grain diameter of about 50 nm. It also exhibits enhanced corrosion resistance when compared with white nickel coatings electrdodeposited under the same condition except the variation of the electroplating current density.
electrodeposition; nano-black nickel film; corrosion
ISSN:1003-6326