Hybrid Coatings for Active Protection against Corrosion of Mg and Its Alloys

A novel approach to surface modification was developed improve the corrosion performance of biodegradable magnesium alloys. Additively manufactured samples and Mg-Mn-based alloys were used in this study. This method involves combination plasma electrolytic oxidation create a porous ceramic-like matrix, followed by treatment with protective biocompatible agents. The most efficient for PEO-layer impregnation using sodium oleate polycaprolactone selected optimized. correlation between structure, composition, properties hybrid coatings established. composition formed polymer-containing layers established XPS Raman microspectroscopy. presence its distribution across coating confirmed at microscale. corrosion-protection level assessed potentiodynamic polarization measurements, electrochemical impedance spectroscopy, hydrogen evolution testing, gravimetry (mass-loss tests) vitro. oleate-containing (HC-SO 0.1–2) demonstrated stable behavior even after 7 days immersion Hank’s balanced salt solution. corrosion-current density modulus measured frequency 0.1 Hz exposure equal 5.68 × 10−8 A∙cm−2 2.03 106 Ω∙cm2, respectively. demonstrates coating’s self-healing properties. effectiveness employing anticorrosive bioactive PEO biomedical products made from demonstrated.