Optimization of Plasma Electrolytic Oxidation Technological Parameters of Deformed Aluminum Alloy D16T in Flowing Electrolyte

The prospects of plasma electrolytic oxidation (PEO) technology applied for surface hardening aluminum alloys are substantiated. work aims to optimize the technological process PEO in flowing electrolyte. design equipment and deformed alloy D16T silicate–alkaline electrolyte have been developed. Oxide coatings were formed according various parameters process. properties oxide evaluated, respectively, by measurements coating thickness, geometric dimensions samples, microhardness, wear tests, optical scanning electron microscopy. To study influence forming on geometrical, physical, mechanical properties, planning experiment was used. According results conducted experiments, a regression equation second order obtained response surfaces constructed. We determined optimal values process: component concentration ratio (Na2SiO3/KOH), current density, flow rate, temperature, which provide with minimal sufficiently high physical indicators accuracy shape parts. research showed that mainly depend almost all constituent modes Samples Al2O3 tested during dry friction “ring–ring” scheme. It established temperature zone samples an is lower compared steel without coating, this indicates frictional heat resistance coating.