Microplasma synthesis of Fe-containing coatings on aluminum in homogeneous electrolytes

Abstract

In this work, we suggest a method for microplasma synthesis of multicomponent iron-containing oxide coatings on the surface of aluminum alloys. For producing the coatings, we use a homogeneous electrolyte that contains iron in the form of its complexes with EDTA4− and has a pH value of 9–10. The dynamics of the decrease in the pH value of the electrolyte is studied during microplasma formation of the coatings. The content of iron in the coatings is determined. The morphology, microstructure, and phase composition of the coatings obtained are studied by optical microscopy and X-ray powder diffraction analysis.