Nanomechanical and Electrochemical Corrosion Testing of Nanocomposite Coating Obtained on AZ31 via Plasma Electrolytic Oxidation Containing TiN and SiC Nanoparticles

Lightweight magnesium alloys offer excellent benefits over Al due to their high specific strength and damping properties, but they are more prone galvanic corrosion. Plasma electrolytic oxidation (PEO) coatings reinforced by nanoparticles have been shown improve corrosion resistance possess better mechanical properties. A lot of research has published that focuses on the effect nanoparticle concentration in PEO electrolyte solution, type nanoparticle, properties obtained. The aim paper is study processing time nanoparticle-reinforced coating AZ31 alloy. TiN SiC were produced using plasma chemical synthesis added KOH-based develop coatings. was kept constant at 0.5 g/L treatment varied as follows: 1, 2, 3, 5, 10 min. tested for microstructure, phase, makeup, nano-mechanical resistance. Nanoparticles found be clustered spread unevenly led a decrease size number pores surface. improved with time. hardness contact modulus particles 26.7 25.2% greater than those particles. Addition resulted when 5 or lowest rate 6.3 × 10−5 mm/yr obtained TiN-added processed