阳极氧化法构建纳米结构制备铝超疏水表面  

Fabrication of Super-hydrophobic Film on Aluminum by Anodizing to Construct Nanostructure

作　　者：李康宁[1] 余新泉[1] 周荃卉[1] 陈锋[1] 顾忠泽[2] 

机构地区：[1]东南大学材料科学与工程学院江苏省先进金属材料高技术研究重点实验室,江苏南京211189 [2]东南大学生物科学与医学工程学院生物电子学国家重点实验室,江苏南京210096

出　　处：《纳米科技》2008年第5期43-47,共5页

摘　　要：研究了喷砂和阳极氧化技术相结合，在铝合金表面构建合适的微米一纳米二级结构，并通过氟硅烷的修饰降低表面自由能，以制备铝基超疏水表面材料。研究表明：不同的电解液进行阳极氧化制得的样品氟化后具有不同的接触角。SEM分析可知，山峰山谷状的微米级结构和蜂窝状的纳米级结构形成的二级结构是提高疏水性能的关键。当接触水滴时，这种二级结构可以稳定地捕获空气，产生超疏水性。The unique micro- and nanostructure was fabricated on the surface of aluminum by the combination of gritblasting and anodizing, and decreasing the surface free energy was decreased by the modification of FAS, the superhydrophobic film on aluminum was fabricated. The study shows that the different kinds of electrolyzing solution have different effect on the hydrophobicity. The results obtained from the analysis of SEM shows that the hierarchical microand nanostrueture which is composed of peak-valley fluctuation and honeycomblike hollows is the key to improve the hydrophobicity. When the bead is on the surface, this unique structure can capture air stably.

关 键 词：超疏水 喷砂 阳极氧化 接触角 

分 类 号：TG178[金属学及工艺—金属表面处理]