Preparation and Properties of Al-Ni Composite Anodic Films on Aluminum Surface  

作　　者：赵旭辉 左禹 

机构地区：[1]School of Materials Science and Engineering,Key Laboratory of Carbon Fiber and Functional Polymers,Ministry of Education,Beijing University of Chemical Technology

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2012年第2期242-246,共5页武汉理工大学学报（材料科学英文版）

基　　金：Funded by the National Natural Science Foundation of China (No.50571006);the Key Project of Science and Technology of Ministry of Education of China (No.108129)

摘　　要：Ni element was introduced to aluminum surface by a simple chemical immersion method, and A1-Ni composite anodic films were obtained by following anodizing. The morphology, structure and composition of the A1-Ni anodic films were examined by scanning electron microscopy （SEM）, energy disperse spectroscopy （EDS） and atomic force microscopy（AFM）. The electrochemical behaviors of the films were studied by means of polarization measurement and electrochemical impedance spectroscopy （EIS）. The experimental results show that the A1-Ni composite anodic film is more compact with smaller pore diameters than that of the A1 anodic film. The introduction of nickel increases the impedances of both the barrier layer and the porous layer of the anodic films. In NaC1 solutions, the A1-Ni composite anodic films show higher impedance values and better corrosion resistance.Ni element was introduced to aluminum surface by a simple chemical immersion method, and A1-Ni composite anodic films were obtained by following anodizing. The morphology, structure and composition of the A1-Ni anodic films were examined by scanning electron microscopy （SEM）, energy disperse spectroscopy （EDS） and atomic force microscopy（AFM）. The electrochemical behaviors of the films were studied by means of polarization measurement and electrochemical impedance spectroscopy （EIS）. The experimental results show that the A1-Ni composite anodic film is more compact with smaller pore diameters than that of the A1 anodic film. The introduction of nickel increases the impedances of both the barrier layer and the porous layer of the anodic films. In NaC1 solutions, the A1-Ni composite anodic films show higher impedance values and better corrosion resistance.

关 键 词：ALUMINUM ANODIZING composite anodic film corrosion resistance 

分 类 号：TG174.44[金属学及工艺—金属表面处理]