PEO is an anodization technique where the applied voltage is sufficiently high to create plasma discharges within the electrolyte at the surface of the treated sample. This allows forming thick crystalline coatings with improved properties such as resistance to wear, corrosion etc. In this study,we treated alloyed Ti6Al4V samples for 15 min at 0.06 A/cm² in a phosphate-based electrolyte, with a cell voltage reaching up to 250 V. This allowed to form dense, 20 μm thick crystalline TiO2 coatings. At the macroscopic scale, the coatings formed are uniform, with a typical PEO surface morphology:pancakes of melted TiO2 with holes formed by individual arcs at their center. A XRD analysis of the coating confirms the presence of both the anatase and rutile phases. Our presentation will further show the influence of the critical electrical parameters, more specifically the pulse duration, on the thickness, crystallinity and phase distribution of the titania coatings.