电沉积纳米墙仿生结构涂层及其海水防腐防污研究  

Biomimetic coating based on electrodeposited nanowall structure and its anti-corrosion and anti-biofouling in seawater

作　　者：丁序海 候吉浩 魏乾柱 邱日 于溢禛 Ding Xuhai;Hou Jihao;Wei Qianzhu;Qiu Ri;Yu Yizhen(Sandaogou Coal Mine,Shanxi Deyuan Fugu Energy Co.Ltd.,Yulin 719410,China;College of Safety and Environmental Engineering,Shandong University of Science and Technology,Qingdao 266510,China)

机构地区：[1]陕西德源府谷能源有限公司三道沟煤矿,陕西榆林719407 [2]山东科技大学安全与环境工程学院,山东青岛266510

出　　处：《电镀与精饰》2023年第7期33-42,共10页Plating & Finishing

基　　金：国家自然科学基金资助项目(52074172)。

摘　　要：针对铜的海水腐蚀和生物污损问题,采用一步电化学沉积法在紫铜表面制备了基于纳米墙形貌的超疏水涂层(SHS),通过将稳定的油相替代SHS涂层中不稳定的空气膜,得到超滑涂层(SLIPS)。所制备的SHS静态接触角为165 o,表现出优良的超疏水性能。在3.5 wt.%NaCl水溶液中,裸铜以及SLIPS的自腐蚀电流密度分别为1.08×10^(-6) mA/cm^(2)和2.98×10^(-9) mA/cm^(2),表明SLIPS具有耐海水腐蚀性能;经过6 d浸泡后,SLIPS的阻抗模值仍比裸铜高,说明该涂层对紫铜具有长效防腐蚀作用。以硅藻作为目标污损生物,在硅藻悬浊液浸泡3 d后,裸铜、SHS、SLIPS表面生物附着密度分别为4.56×10^(5) cells/cm^(2)、4.13×10^(4) cells/cm^(2)、3.59×10^(3) cells/cm^(2),SLIPS表面附着的生物量较裸铜表面显著减少,表明SLIPS具有良好的防生物污损能力。在裸铜、SHS、SLIPS表面冰的黏附强度分别为127 kPa、56 kPa和19 kPa,超滑表面与冰的黏附力最小且远低于铜表面,说明超滑表面具有良好的防结冰性能。Aiming at the problem of seawater corrosion and biofouling of copper,a superhydrophobic coating(SHS)based on nanowall morphology was prepared on the surface of copper by one-step electrochemical deposition.By replacing the unstable air film in the SHS coating with a stable oil phase,a slippery liquid-infused porous surface(SLIPS)was obtained.The prepared SHS has a static contact angle of 165 o,showing excellent superhydrophobic properties.In 3.5 wt.%NaCl aqueous solution,the self-corrosion current densities of bare copper and SLIPS are 1.08×10^(-6) mA/cm^(2)and 2.98×10^(-9) mA/cm^(2),respectively,indicating that SLIPS has seawater corrosion resistance.After 6 days of immersion,the impedance modulus of SLIPS is still higher than that of bare copper,indicating that the coating has a long-term anti-corrosion effect on copper.The diatom was used as the target fouling organism.After soaking in diatom suspension for 3 days,the bio-adhesion density on the surface of bare copper,SHS and SLIPS was 4.56×10^(5) cells/cm^(2),4.13×10^(4) cells/cm^(2)and 3.59×10^(3) cells/cm^(2),respectively.The biomass attached to the surface of SLIPS was significantly lower than that to the surface of bare copper,indicating that SLIPS has good anti-biofouling ability.The adhesion strength of ice on bare copper,SHS and SLIPS surfaces is 127 kPa,56 kPa and 19 kPa,respectively.The adhesion force between SLIPS and ice is the smallest and much lower than that of copper surface,indicating that SLIPS has good anti-icing performance.

关 键 词：仿生 紫铜 超疏水涂层 电沉积 海洋腐蚀 生物污损 防冰 

分 类 号：TG174[金属学及工艺—金属表面处理]