Abstract
Calcium phosphate powder was synthesized from calcium formiate Ca(CHO2)2 and ammonium hydrophosphate (NH4)2 HPO4 with Ca/P ratio in the initial water solutions equal to 1. The phase composition of the powders synthesized from 0.5M solutions was represented by brushite CaHPO4 · 2H2O and octacalcium phosphate Ca8(HPO4)2 (PO4)6 · 6H2O. After firing at 1100°C the phase composition of the powder was represented by calcium pyrophosphate β-Ca2P2O7 and tricalcium phosphate β-Ca3 (PO4)2. The synthesized powder can be used to obtain biocompatible resorbable biphase ceramic materials and composites with a polymer matrix.
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