Abstract
Brushite (CaHPO4 · 2H2O) powder has been synthesized in aqueous 1.0 M solutions of calcium nitrate dipotassium hydrogen phosphate, and disodium hydrogen phosphate at a Ca/P ratio of unity, without adjusting the pH of the reaction. After synthesis and drying, the fraction of a reaction by-product (NaNO3, KNO3, or their mixture) in the powder was about 20 wt %. After firing at temperatures from 800 to 1000°C, the ceramics prepared using the powder synthesized from Ca(NO3)2 and Na2HPO4 consisted of β-Ca2P2O7 and β-NaCaPO4. After firing at temperatures from 900 to 1100°C, the ceramics prepared using the powder synthesized from Ca(NO3)2 and K2HPO4 consisted of Са10К(РО4)7 and СаК2Р2О7. The ceramic composites produced in this study can be recommended as materials for resorbable bone implants.
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Original Russian Text © T.V. Safronova, V.I. Putlyaev, Ya.Yu. Filippov, T.B. Shatalova, D.S. Fatin, 2018, published in Neorganicheskie Materialy, 2018, Vol. 54, No. 2, pp. 210–220.
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Safronova, T.V., Putlyaev, V.I., Filippov, Y.Y. et al. Ceramics Based on Brushite Powder Synthesized from Calcium Nitrate and Disodium and Dipotassium Hydrogen Phosphates. Inorg Mater 54, 195–207 (2018). https://doi.org/10.1134/S0020168518020127
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DOI: https://doi.org/10.1134/S0020168518020127