The influence of the chemical composition of aluminum on the quality of coatings formed using microarc oxidation

The paper discusses the influence of the chemical composition of the base material on the performance characteristics (hardness, thickness, wear resistance) of oxide coatings formed by microarc oxidation on aluminum alloys. The possibilities of forming the preferred high-hard phase α-Al2O3, as well as oxides of alloying elements in aluminum alloys, are being studied. The thermodynamic analysis carried out in conjunction with the results of experimental data will make it possible to predict the composition of a coating, thereby obtaining protective coatings with desired properties on aluminum alloys.