两步法制备超疏水耐蚀镍镀层

doi:10.11902/1005.4537.2015.233

中国腐蚀与防护学报

2016, Vol. 36

Issue (5): 450-456 DOI: 10.11902/1005.4537.2015.233

本期目录 | 过刊浏览

两步法制备超疏水耐蚀镍镀层

丁诗炳,项腾飞,李澄(

),郑顺丽,王绮,杜梦萍

南京航空航天大学材料科学与技术学院南京 211106

A Simple Two-step Process for Fabrication of Super-hydrophobic Nickel Film by Electro-deposition Technique

Shibing DING,Tengfei XIANG,Cheng LI(

),Shunli ZHENG,Qi WANG,Mengping DU

College of Materials Science and Technology, Nanjing University of Aeronautics & Astronautics, Nanjing 211106, China

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摘要:

用两步电镀法在Fe基体表面制备了微纳米尺度特殊结构的超疏水镍镀层。用SEM观察了镀层形貌,并测定了H₂O在镀层表面的接触角,用Tafel曲线和电化学阻抗谱研究了镀层的防腐性能。结果表明,经两步电镀所制备的镍镀层为花瓣状微纳米结构,粗糙程度较Fe基体表面有明显提高,有效提高了表面的疏水性,H₂O在镀层表面的接触角高达140.23°。经过进一步的低表面能物质修饰后,接触角大于150°。镀层在3.5%NaCl溶液中表现出了良好的耐蚀性。

关键词 ：微纳米结构, 两步电镀, 电镀镍, 接触角, 耐蚀性

Abstract：

Micro-nano structural super-hydrophobic nickel coatings were prepared by a two-step electro-deposition technique on steel substrates. The surface morphology and wettability of the coatings were characterized by means of scanning electron microscope and water contact angle measurement. Their corrosion performance was investigated by polarization curves and electrochemical impedance technique. The results show that the petal-like micro-nano structural Ni coatings showed excellent hydrophobicity and much higher roughness rather than the bare steel. The coatings had a contact angle as high as 140.23°, which then can exceed to 150° after further modification with myristic acid. Besides, the coatings exhibit excellent corrosion resistance in the 3.5%NaCl solution.

Key words： micro-nano structure two-step electrodeposition electronickelling water contactangle corrosion resistance

基金资助:江苏高校优势学科建设工程资助项目

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引用本文:

丁诗炳,项腾飞,李澄,郑顺丽,王绮,杜梦萍. 两步法制备超疏水耐蚀镍镀层[J]. 中国腐蚀与防护学报, 2016, 36(5): 450-456.
Shibing DING, Tengfei XIANG, Cheng LI, Shunli ZHENG, Qi WANG, Mengping DU. A Simple Two-step Process for Fabrication of Super-hydrophobic Nickel Film by Electro-deposition Technique. Journal of Chinese Society for Corrosion and protection, 2016, 36(5): 450-456.

链接本文:

https://www.jcscp.org/CN/10.11902/1005.4537.2015.233 或 https://www.jcscp.org/CN/Y2016/V36/I5/450

图1 经一步和两步电镀获得的镍镀层的微观形貌

图2 水滴在裸露Fe基体及经不同电镀处理镀镍层的接触角

图3 Fe基体, MNF和MMNF的动电位极化曲线图

图4 十四酸在镍镀层表面自组装结构示意图

表1 Fe基体, MNF和MMNF极化曲线拟合参数

图5 Fe基体、MNF和MMNF的Nyquist和Bode图

图6 Fe基体、MNF和MMNF的EIS等效电路图

图7 MMNF在3.5%NaCl溶液中浸泡不同时间后的Nyquist图

表2 由图5获得的阻抗谱拟合参数

表3 由图7获得的阻抗谱拟合参数

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