两步法制备超疏水耐蚀镍镀层  

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

作　　者：丁诗炳 项腾飞 李澄[1] 郑顺丽[1] 王绮[1] 杜梦萍 

机构地区：[1]南京航空航天大学材料科学与技术学院,南京211106

出　　处：《中国腐蚀与防护学报》2016年第5期450-456,共7页Journal of Chinese Society For Corrosion and Protection

基　　金：江苏高校优势学科建设工程资助项目

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H_2O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,H_2O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。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.

关 键 词：微纳米结构 两步电镀 电镀镍 接触角 耐蚀性 

分 类 号：TQ153.12[化学工程—电化学工业]