Influence of preparation conditions on microstructure and bioactivity of CaO-SiO₂ ceramics

Abstract

In the present study, CaSiO₃ ceramics were prepared by different preparation conditions and investigated the influence of microstructures on its bioactivity. By changing grinding conditions of CaSiO₃ powder, two CaSiO₃ samples having different microstructures were obtained. For the soaking of porous CaSiO₃ in SBF solution, hydroxyapatite (HAp) layer was formed by small ball-like particles and the surface was completely covered with the HA layer only by soaking for 1 day. For the soaking of dense CaSiO₃, HAp layer was observed, however, the surface was not completely covered with HA even soaking for 25 days.