Preparation and study of the reactivity of Sr-substituted alpha tricalcium phosphates

The substitution in varying amounts of strontium (Sr) for calcium in the alpha tricalcium phosphate (α TCP) structure was investigated. The effects on the reactivity towards the formation of hydroxypalatite on hydration were also studied. The prepared α-TCP and the fully hydrated α-TCP powders were characterized by means of X-ray diffraction and the CuKα1 radiation. It was found that the alpha form of Sr-substituted TCP could be prepared by rapid quenching in air and the reactivity of the Sr-substituted TCPs with water was also found to be lowered with increasing Sr amounts.