ZHU Qingxia ,XU Qiongqiong,LUO  Minghua

( Jingdezhen Ceramic Institute, Jingdezhen 333001)

Abstract:Carbonated hydroxyapatite (CHA) and hydroxyapatite (HA) were prepared by the wet chemical method. The degradability, surface reaction products and mineralization mechanism in SBF solution of HA and CHA were investigated in vitro using XRD, SEM, FTIR and AAS. The results show that the CHA have high bioactivity owing to rapid formation of hydroxyl-carbonate-apatite (HCA) on the biomaterial's surface in SBF. The composition, solubility and surface energy of materials had an important effect on nucleation of mineralization layer.

Keywords:carbonate hydroxyapatite (CHA), biomineralization, simulated physiological fluid, bioactivity