The present work deals with the investigation of the corrosion and sliding wear behaviour of detonation gun sprayed (DG) conventional and nanostructured Al2O3–13TiO2 coatings deposited on a biomedical grade Ti–13Nb–13Zr alloy. The microstructure and phase composition of the coatings were characterised by scanning electron microscopy (SEM) and X-ray diffraction (XRD). Hardness measurements were carried out using a Vickers hardness testing machine. The experimental results suggested that the nano structured Al2O3–13TiO2 coating exhibited 43 and 33% increase respectively in corrosion and wear resistances compared to the conventional Al2O3–13TiO2 coating. This improvement in the above properties of nanostructured Al2O3–13TiO2 coating is due to the presence of larger volume fraction of nanosized particles and lower porosity attained by spraying using DG.