Modern trends in the development of a light alloy oxidation technology (inhibitors, catalysts, medical biotechnologies)
Keywords:
plasma electrolytic oxidation, coatings, corrosion protection, surface preparation, inhibitorsAbstract
Throughout the last century and the beginning of the current one, many technologies have been developed to modify the surface of metallic materials in order to improve their corrosion, mechanical and functional properties. Among the most advanced of these technologies is plasma electrolytic oxidation (PEO). This paper presents the results of a review of the scientific and practical achievements and trends in the field of the PEO of light alloys. The main attention is paid in the paper to the issues of the corrosion properties of materials, the photocatalytic and catalytic properties, as well as biotechnologies. It was found that in contrast to the initial stages of the development of the PEO technology, there is a decrease in interest in the processing of aluminum alloys aimed at producing their high insulation properties or wear resistance. The PEO technology is beginning to be considered not a replacement for traditional chemical and electrochemical methods of forming coatings on metallic materials, but rather a means of producing functional properties of the surface, which previously had no alternative. A striking example of this are implants made of magnesium alloys. The results of the works given in these paper confirm this. The use of PEO for magnesium and its alloys has recently been one of the main areas. Processing regimes are being improved, and various options for subsequent processing are being considered to produce high protective properties even in the presence of damage to the oxide layer, which was previously extremely difficult due to the chemical and electrochemical characteristics of this metal. The PEO technology is also beginning to be considered in narrower areas of engineering to provide photocatalytic and catalytic properties. Initially, the PEO technology of titanium alloys assumed producing high wear re-sistance and insulation properties, but as the study of the oxide structures obtained by the PEO method progressed, it was found that the formation of the TiO2 coatings on flexible titanium foils provides a high photocatalytic activity of the surface. Based on the obtained information, the most effective and up-to-date ways of further development of the PEO technology are proposed.Downloads
Published
2025-08-01
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