Effect of Si3N4/TaC Particles on the Structure and Properties of Microarc Oxidation Coatings on TC4 Alloy

Si3N4/TaC composite MAO coatings were fabricated by microarc oxidation (MAO) on a Ti–6Al–4V (TC4) alloy in phosphate-based electrolyte containing mixed particles. The influence of the amount particles microstructure, composition, tribological behavior, and corrosion properties has been investigated. Morphological research was carried out using scanning electron microscopy (SEM), with surface porosity analyzed ImageJ software. X-ray diffraction (XRD) used for detection phase characteristic coatings, an abrasive wear test electrochemical measurements conducted artificial seawater solution ball-on-disc friction tester workstation, respectively. results showed that could be successfully incorporated into addition greatly reduced thus improving both coatings. coating 1 g/L Si3N4 + 0.5 TaC best property optimum properties.