Application of anodic dissolution method for a study of electrocolored aluminum oxides

The anodic dissolution of color carrier of colored aluminum anodic oxide fi lms (AOF) is studied before and after their coloring, using ac in various e lectrolytes containing Cu(II). The voltammetric polarization curves of anod ic dissolution of colored AOF in 0.1 M H2SO4 depend on the amount of copper deposited in the pores and its oxidation state (Cu, Cu2O, CuO). Analytical and X-ray diffraction examination of AOF prior to and after the anodic dis solution shows that the anodic dissolution method is inapplicable for the d etermination of the oxidation state of copper electrodeposited in AOF pores or the amount of copper oxides.