Iron-containing coatings obtained by microplasma method on aluminum with usage of homogeneous electrolytes

The microplasma synthesis method of multicomponent oxide coatings including iron oxide on an aluminum alloy surface has been studied. The homogeneous electrolytes containing iron complexes with Edta4− under pH 9-10 have been used. The dynamics reducing the pH of the electrolyte during formation process have been studied. The content of iron in the coatings has been measured spectrophotometricaly. Morphlogy and phase composition of the coatings have been studied by the scanning electron microscopy and X-ray powder diffraction.

► Alkaline homogeneous electrolyte with transition metal complexes. ► Coatings contain metallic iron and its oxides in alumina-silica matrix. ► Good reproducibility of coatings properties.