[en] Full text: Tribocorrosion is a multidisciplinary research area that has gained importance biomedical engineering. It is defined as an irreversible transformation of a metal/alloy resulting from simultaneous physico-chemical and mechanical surface interactions in a tribological contact. The titanium is widely used as implant material, however, despite the excellent properties such as, low density, corrosion resistance and biocompatibility, it usually presents poor tribological behavior. The Plasma Electrolytic Oxidation (PEO) promotes the transformation of the titanium substrate into a high hardness ceramic layer by the interaction of anodic oxide growth and plasma channel shock caused by the dielectric break down at high voltages, taking place in an aqueous electrolyte. The characteristics of the oxide layer, such, the roughness, thickness, porosity, crystallinity and chemical composition can be tailored by changes in the PEO process parameters or by a posterior annealing treatment at temperatures above 400 deg C. The aim of this work was to evaluate the influence of the PEO voltage and annealing treatment in the surface and tribocorrosion properties. Samples of cp-titanium were submitted PEO treatment from 250 to 400V for 1 in an electrolyte containing Ca and P the annealing treatment was realized at 600 deg C for 1 hour. The surface properties were evaluated by X-ray diffraction (XRD), scanning electron microscopy (SEM/EDS), nanoindentation, and profilometer. The tribocorrosion evaluation was realized using a linear reciprocating ball on flat tribometer with a three electrode electrochemical cell coupled to potentiostat / galvanostat. The results shows that with the increase of the PEO voltage and time lower is the tribocorrosion currents. (author)