Titania doped bioactive ceramics prepared by solid state sintering method

A bioactive ceramic in (48−x) SiO2-36CaO-4P2O5-12Na2O-xTiO2 (where x= 0, 3.5, 7, 10.5 and 14 mol%) system was prepared by solid state sintering method. The in vitro bioactive properties of bodies were evaluated using stimulated body fluid under static condition at 37 °C. The formation of hydroxyl-carbonated apatite layer on the surface of samples was examined by XRD, FTIR, SEM and AAS. It was found that partial substitution of SiO2 with TiO2 produced a positive impact on the bioactivity of the specimens. Addition of TiO2≤10.5 mol% to the system not only enhanced the bioactive properties but also accelerates the apatite forming process.