Electrochemical corrosion and bioactivity of titanium-hydroxyapatite composites prepared by spark plasma sintering

► We investigated corrosion resistance and bioactivity of Ti-HA composites. ► The surface microstructure related with corrosion behavior was studied by FE-SEM. ► Superior corrosion resistance was obtained for Ti containing 0-10% HA. ► Higher HA content decreased the corrosion resistance. ► Bioactivity test in SBF showed the growth of nanohydroxyapatite layer and particles.