Kucukosman, RidvanSukuroglu, Ebru EmineTotik, YasarSukuroglu, Suleyman2025-03-172025-03-1720212468-0230https://doi.org/10.1016/j.surfin.2020.100894https://hdl.handle.net/20.500.13099/1941Composite coatings were deposited on AZ91 magnesium alloys by micro arc oxidation (MAO) and the MAO-hydrothermal treatment (HT). The MAO process of Mg alloys was performed in the silicate/phosphate-based electrolyte with graphite particles size of 5-10 and 75 mu m and then the obtained samples were submitted to hydrothermal treatment at 150 degrees C in the graphite-ethanol mixture. The structural and morphological properties of composite coatings were analized X-ray diffraction (XRD) and scanning electron microscopy (SEM). The wear resistance was examined with ball-on-disc tribometer. The addition of graphite to the MAO electrolyte solution increased the coating thicknesses and compactness and the surface morphologies acquired relatively a homogeneous appearance. The coating surfaces were enriched in graphite by HT and the wear test results showed that the wear resistance of the graphite-doped MAO-HT composite coatings was significantly improved.eninfo:eu-repo/semantics/closedAccessSurface coatingMicro arc oxidation (MAO)Composite coatingsGraphiteHydrothermal treatment (HT)Article10.1016/j.surfin.2020.10089422Q1WOS:0006152526000012-s2.0-85098781246Q1