Anodic aluminum oxide formed in aqueous solutions of chelated complex zinc and cobalt compounds

The galvanostatic anodizing results of specially prepared high-purity aluminum in aqueous solutions of complex compounds K$_{3}$[Co(C$_{2}$O$_4$)$_3$] and K$_{2}$[Zn(edta)] of various concentrations in the current density ranges 1.5–1.10 $\cdot$ 10$^2$ and 1.5–0 mA $\cdot$ сm$^{-2}$, respectively. The kinetic features of anodizing have been established, indicating the occurrence of an oscillatory electrochemical process. Morphological features of a flaky and loose nature for K$_{2}$[Zn(edta)] and monolithic for K$_{3}$[Co(C$_{2}$O$_4$)$_3$], uncharacteristic for anodic aluminum oxide, were revealed. The elemental composition, IR spectroscopic and photoluminescent characteristics of the formed oxides are shown.