Characteristic of ceramic coatings on aluminum by plasma electrolytic oxidation in silicate and phosphate electrolyte

Effect of current density on the microstructure and corrosion behaviour of plasma electrolytic oxidation treated AM50 magnesium alloy

“…Even though the publications of Lv et al [15,16] have addressed the PEO process of magnesium alloys in only two stages, it is appropriate to discuss the coating formation in four stages. The different stages are marked in the voltage vs. time plots obtained at various current densities and presented in Fig.…”

Formation of Black Ceramic Layer on Aluminum Alloy by Plasma Electrolytic Oxidation in Electrolyte Containing Na₂WO₄

“…When the voltage during PEO coating would exceed the breakdown voltage, the ion spice of HPO 4 2¹ would also migrate inward through the discharge channels and phosphorus elements were found in the ceramic layer. 20) To discuss the mechanism of the ceramic layer growth together with the migration of WO 4 2¹ ions, the EDS line scanning of the sample D was made across the ceramic layers as shown in Fig. 4.…”

The influence of the conditions of microplasma processing (microarc oxidation in anode­cathode regime) of aluminum alloys on their phase composition

“…The electrolytes used are alkaline [20], so they are environmentally safer than chromium or sulfuric acid, which are commonly used in the anodizing process [21]. Microarc oxidation allows obtaining multifunctional ceramic-like modified layers with a wide range of properties, including wear-resistant [22], corrosion-resistant [23], heat-resistant [24], electrical insulating, and decorative [25].…”