AP25795409 – Study on surface modification of aluminum alloys by plasma electrolytic oxidation

Objective of the project – Obtain high-strength and corrosion-resistant oxide ceramic-like coatings on the surface of aluminum alloys by plasma electrolytic oxidation (PEO) in bipolar current mode and to study the influence of processing parameters to process optimization.

Relevance: This study is driven by the widespread use of aluminum alloys despite their relatively low hardness and wear resistance. These limitations reduce the service life of components and necessitate the development of effective surface protection methods. Plasma electrolytic oxidation is considered a promising technique for improving the surface properties of aluminum alloys. Enhancing the energy efficiency of this process and adapting it for industrial applications are particularly important. Research in this area will contribute to extending material durability and expanding their range of applications.

Scientific supervisor: PhD, Gaukhar Bauyrzhankyzy Eshmanova.

Expected and achieved results: Within the project, the parameters of the plasma electrolytic oxidation (PEO) process for aluminum alloys in bipolar current mode will be optimized. It is expected to obtain surface-modified materials with improved electrochemical and mechanical properties. A comprehensive literature review has been conducted, and the key processing parameters affecting the formation of oxide coatings have been identified. The “soft sparking” phenomenon in bipolar mode has been investigated, and the factors influencing its occurrence have been analyzed. The results demonstrate that precise control of PEO parameters enables the formation of coatings with tailored structure and phase composition. The research outcomes are planned to be published in at least three scientific journals at both international and national levels. Overall, the findings contribute to improving the energy efficiency of the PEO process and promoting its industrial application.