恒直流二次阳极氧化法构造类荷叶结构氧化铝薄膜  

Constant dc anodic oxidation method to construct lotus-leaf-like structure of alumina membrane

作　　者：胡玮[1] 李澄[1] 李敏[1] 尹成勇[1] 王艳慧[1] 郑顺丽[1] 

机构地区：[1]南京航空航天大学材料科学与技术学院,南京210016

出　　处：《功能材料》2016年第11期11220-11225,共6页Journal of Functional Materials

基　　金：江苏高校优势学科建设工程资助项目;南航-中联科技电子新材料联合实验室基金资助;江苏省研究生创新科研项目的大力支持

摘　　要：荷叶因为有特殊的尖岛状结构和具有低表面能的表层,因此具有良好的超疏水性能,能不受水的粘附,具有生物自净的能力。在金属的防腐蚀领域的应用就是构建金属表面的类荷叶结构。本研究通过对纯铝箔在磷酸环境下,使用低电压恒直流法进行阳极氧化,构建了类荷叶结构的氧化铝薄膜。并对薄膜的表观和性能进行表征,薄膜的接触角达到了152.24°,超疏水膜使铝在质量分数为3.5%的NaCl溶液中的自腐蚀电位正移0.1V,腐蚀电流密度降低3个数量级,有效地提高了铝的耐蚀性。Due to the pointed-island shaped structure and the low surface energy,lotus leaf has performance of super hydrophobic,it can not be affected by the adhesion of water,and has the ability of biological self-purification.Lotus-leaf-like structure built on the surface of metals has been applied in field of metal anti-corrosion.This research by means of anodizing on pure aluminum foil in the phosphate solution,and constant dc low voltage method to the anodize oxidation,build lotus-leaf-like alumina membrane.The appearance and the performance of the alumina oxide film were characterized and the contact Angle is 152.24°.The self corrosion potential of the Superhydrophobic film is shifted positively by 0.1Vin 3.5wt%NaCl solution.and the corrosion current density is decreased by 3orders 0fmagnitude,thus improving the resistance to corrosion of aluminum foil effective.

关 键 词：类荷叶结构 阳极氧化 薄膜 耐蚀性 

分 类 号：TG174.4[金属学及工艺—金属表面处理]