FTIR and XRD evaluation of carbonated hydroxyapatite powders synthesized by wet methods

Carbonated hydroxyapatite powders were obtained by wet method. The CO32- ions were introduced using NH4HCO3 and NaHCO3 in the amount of 0.1 or 0.05 M. It was found by FTIR and X-ray studies that fraction of CO32- substitutions in the HAp structure and thermal stability of CHAp depends on the amount and type of carbonate additives. The significant decomposition of carbonated hydroxyapatite powders is observed when they are heated at the temperature of 800 degrees C. (c) 2004 Elsevier B.V. All rights reserved.