电沉积电位对镍钴合金超疏水镀层耐蚀性的影响  

Effect of electrodeposition potential on corrosion resistance ofnickel-cobalt alloysuper-hydrophobic coatings

作　　者：李宏亮 刘胜达 崔孟超 曹丽丽 LI Hongliang;LIU Shengda;CUI Mengchao;CAO Lili(Academy for Advanced Interdisciplinary Science and Technology,University of Science andTechnology Beijing,Beijing 100083,China;School of Mechanical and Automotive Engineering,Zhejiang University of Science and Technology,Hangzhou 310063,China;School of Foreign Studies,China University of Political Science and Law,Beijing 100088,China)

机构地区：[1]北京科技大学前沿交叉科学技术研究院,北京100083 [2]浙江科技大学机械与能源工程学院,杭州310063 [3]中国政法大学外国语学院,北京100088

出　　处：《功能材料》2024年第11期11158-11163,共6页Journal of Functional Materials

基　　金：国家重点研发计划项目(2022YFA1204500、2022YFA1204502),国家自然科学基金区域创新发展联合基金(U23A20689)。

摘　　要：采用电化学沉积方法在碳钢表面制备了镍钴合金镀层。采用扫描电镜(SEM)、能谱仪(EDS)、接触角检测仪等研究了电化学沉积电位对镍钴合金镀层形貌、化学成分和疏水性的影响。利用电化学工作站,采用塔菲尔曲线外推法、交流阻抗法对不同电位下镀层经PFTEOS改性处理后样品进行耐蚀性检测。结果表明,随着沉积电位的提升,镀层表面颗粒逐渐增大,证明沉积速率随着电位的上升而增大,且镀层表面颗粒均匀性在不同电位下展现出不同的状态。在经过5%PFTEOS的乙醇溶液修饰后,在沉积电位为-1.4、-1.6 V下,样品表面达到了超疏水状态。电化学极化曲线测试和交流阻抗测试表明,在电沉积电位为-1.4 V时所获得的镍钴合金镀层在PFTEOS改性处理后的耐腐蚀最好。A nickel cobalt alloy coating was prepared on the surface of carbon steel using electrochemical deposition method.The effects of electrochemical deposition potential on the morphology,chemical composition,and hydrophobicity of nickel cobalt alloy coatings were studied using scanning electron microscopy(SEM),energy dispersive spectroscopy(EDS),and wetting angle detector.Using an electrochemical workstation,corrosion resistance testing was performed on samples obtained at different potentials using Tafel curve extrapolation and AC impedance method.The results indicate that as the deposition potential increases,the surface particles of the coating gradually increase,indicating that the deposition rate increases with the increase of potential,and the uniformity of the coating surface particles exhibits different states at different potentials.After being modified with 5%PFTEOS ethanol solution,the surface of the sample reaches a superhydrophobic state at deposition potentials of-1.4 V and-1.6 V.Electrochemical polarization curve testing and AC impedance testing indicate that the nickel cobalt alloy coating obtained at an electrodeposition potential of-1.4 V after PFTEOS modification exhibits better corrosion resistance.

关 键 词：电沉积 镍钴合金 润湿性 耐蚀性 形貌结构 

分 类 号：TG142.4[一般工业技术—材料科学与工程] TG174.44[金属学及工艺—金属材料] TQ153.13[金属学及工艺—金属学]