Ceramics Based on Powder Mixtures Containing Calcium Hydrogen Phosphates and Sodium Salts (Na2CO3, Na4P2O7, and NaPO3)статья

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Дата последнего поиска статьи во внешних источниках: 26 декабря 2018 г.

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1. Safronova_IM724.pdf Safronova_IM724.pdf 2,0 МБ 16 декабря 2018 [safronova]

[1] Ceramics based on powder mixtures containing calcium hydrogen phosphates and sodium salts (na2co3, na4p2o7, and napo3) / T. V. Safronova, V. I. Putlyaev, Y. Y. Filippov et al. // Inorganic Materials. — 2018. — Vol. 54, no. 7. — P. 724–735. Ceramic materials in the Na2O–CaO–P2O5 system have been produced using powder mixtures containing calcium hydrogen phosphates (monetite/brushite: CaHPO4/CaHPO4 ∙ 2H2O) and sodium salts (Na2CO3 ∙ H2O, Na4P2O7 ∙ 10H2O, and NaPO3). These salts were used as precursors to the following hightemperature phases: Сa2P2O7, Na2O, Na4P2O7, and NaPO3. The amount of the salts in the powder mixtures was such that the oxide composition of the ceramics corresponded to 10 mol % sodium oxide for each mixture in the Na2O–CaO–P2O5 system. The powder mixtures were prepared using mechanical activation in acetone, which was accompanied by monetite rehydration to brushite. X-ray diffraction characterization showed that, after firing, the phase composition of the ceramics produced from the powder mixtures thus prepared lay in the Сa2P2O7–NaCaPO4–Na2СaP2O7–Са(РО3)2 phase field. The resultant ceramic materials contain biocompatible and bioresorbable phases and can be recommended for bone implant fabrication. Keywords: synthesis, brushite, monetite, sodium carbonate monohydrate, sodium pyrophosphate decahydrate, sodium polyphosphate, mechanical activation, monetite rehydration, bioceramics, composite, calcium pyrophosphate, rhenanite, sodium calcium double pyrophosphate. Keywords: synthesis, brushite, monetite, sodium carbonate monohydrate, sodium pyrophosphate decahydrate, sodium polyphosphate, mechanical activation, monetite rehydration, bioceramics, composite, calcium pyrophosphate, rhenanite, sodium calcium double pyrophosphate This work was supported by the Russian Foundation for Basic Research, grant nos. 16-08-01172 and 16-53-00154. [ DOI ]

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