超疏水性铜镍涂层的结构和耐蚀性  

Structure and Corrosion Resistance of Superhydrophobic Cu-Ni Coatings

作　　者：贺春林[1] 杨锡芃 于济豪 朱明臻 杨杰 池坪礁 马国峰[1] 宋贵宏[2] HE Chunlin;YANG Xipeng;YU Jihao;ZHU Mingzhen;YANG Jie;CHI Pingjiao;MA Guofeng;SONG Guihong(Liaoning Provincial Key Laboratory of Advanced Materials, Shenyang University, Shenyang 110044, China;School of Materials Science and Technology, Shenyang University of Technology, Shenyang 110870, China)

机构地区：[1]沈阳大学辽宁省先进材料制备技术重点实验室,辽宁沈阳110044 [2]沈阳工业大学材料科学与工程学院,辽宁沈阳110870

出　　处：《沈阳大学学报（自然科学版）》2021年第4期287-293,306,共8页Journal of Shenyang University：Natural Science

基　　金：国家自然科学基金资助项目(51171118,51772193);辽宁省重点研发计划项目(2020JH210100011).

摘　　要：利用直流电镀方法沉积铜镍涂层,用硬脂酸乙醇溶液对铜镍涂层进行疏水化处理,在304不锈钢基体上制备了超疏水性铜镍涂层.利用场发射扫描电镜/能谱仪、接触角测试仪及电化学分析仪对铜镍涂层的形貌、组分、润湿性及在质量分数为3.5%的NaCl溶液中的耐蚀性进行了研究.结果表明,铜镍涂层的表面形貌、成分与疏水化处理时间有关.疏水化处理时间由0 h增加至12 h后,涂层表面上的花瓣状形貌薄片的数量明显增加,涂层与水滴的接触角增大,表面由疏水性转变为超疏水性.极化曲线和电化学阻抗谱图表明,延长疏水化处理时间,可提升涂层的耐蚀性,且随着在质量分数为3.5%的NaCl溶液中浸泡时间的增加,超疏水性涂层的耐蚀性不断增大.The superhydrophobic Cu-Ni coating was prepared on 304 stainless steel substrate by direct current plating and hydrophobic treatment with stearic acid ethanol solution.The morphology,composition,wettability and corrosion resistance of the Cu-Ni coatings in 3.5%(mass fraction)NaCl were investigated by field emission scanning electron microscope/energy dispersive spectrometer,contact angle tester and electrochemical analyzer.The results show that the surface morphology and composition of Cu-Ni coatings after hydrophobic treatment are related to the hydrophobic treatment time.When the hydrophobic treatment time increases from 0 h to 12 h,the number of petal shaped flakes on the coating surface increases significantly,the contact angle between the coating and water droplets increases,and the surface changes from hydrophobic to superhydrophobic surface.The results of polarization curves and electrochemical impedance spectra show that the corrosion resistance of the coatings can be improved by prolonging the hydrophobic treatment time,and with the increase of immerse time in 3.5%NaCl solution,the corrosion resistance is increased.

关 键 词：铜镍涂层 微观结构 超疏水性 润湿行为 耐腐蚀性 

分 类 号：TG178[金属学及工艺—金属表面处理]