Production of oxide coatings by electrolytic plasma oxidation method on EN AW-1050 and EN AW-5083 aluminum alloys

The paper presents the result of electroplasma coatings production on EN AW-1050 and EN AW-5083 aluminum alloys by DC current methods. The process was carried out in alkaline solution using a current density of 15 A/dm2, during 8 min. The produced PEO coatings [2] were sealed and varnished. The influence of current-voltage parameters and temperature on the quality of obtained coatings were investigated. Afterwards, the measurement of: chemical composition, thickness, roughness, corrosion resistance, abrasive wear and coating adhesion to the substrate were done. The produced coatings were also examined using electron scanning microscope.