为了改善传统稀土转化膜的性能,运用浸泡法在铝表面制备Ce-硅烷-ZrO2复合膜。运用SEM、AFM、XPS和EIS等技术手段对复合膜层的微观形貌、化学组成和电化学性能进行研究,并与Ce转化膜进行比较。Ce-硅烷-ZrO2复合膜层表面呈堆砌结构,膜内层主要由Ce(III)的氧化物和氢氧化物构成,而膜外层的主要成分是硅烷偶联聚合而成的大分子网状结构。与Ce转化膜相比,加入硅烷和ZrO2纳米微粒后,复合膜表面的微孔和裂纹都明显减少,且耐蚀性能有了明显的改善。 In order to improve the performance of the conventional rare earth conversion coating, the Ce-silane-ZrO2 composite film was prepared on the aluminum surface by the soaking method. The microstructure, chemical composition and electrochemical performance of the composite films were studied by SEM, AFM, XPS and EIS techniques, and compared with Ce conversion films. Ce-silane-ZrO2 composite membrane surface was piled structure, the inner membrane mainly composed of Ce (III) oxide and hydroxide composition, and the outer layer of the main component is silane coupling polymerization of macromolecules reticular structure. Compared with the Ce conversion film, the addition of silane and ZrO2 nanoparticles, the composite film surface pores and cracks were significantly reduced, and the corrosion resistance has been significantly improved.