(北京化工大学 材料科学与工程学院，北京 100029)
摘 要:
关键字: 锂；水滑石；阳极氧化膜；铝；腐蚀
（Faculty of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China）
Abstract:Lithium element was introduced into high purity aluminum by a hydrotalcite precursor method, and an amorphous Al-Li composite anodic film was obtained by anodizing. The methods of XPS, XRD, SEM, potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) were used to investigate the properties of the films. The results show that a composite Al-Li anodic film is obtained by the method, and Li content in the film is up to 8%. The composite film is more compact than the anodic film on pure aluminum. No matter sealing or not, in NaCl solution, the composite anodic film shows higher corrosion resistance than the anodic film on pure aluminum.
Key words: lithium; hydrotalcite; anodic film; aluminum; corrosion
