An Alternative Chemical Route for the Synthesis and Thermal Stability of Chemically Enriched Hydroxyapatite
2005; Wiley; Volume: 89; Issue: 2 Linguagem: Inglês
10.1111/j.1551-2916.2005.00738.x
ISSN1551-2916
AutoresDaiwon Choi, Prashant N. Kumta,
Tópico(s)Ferroelectric and Piezoelectric Materials
ResumoHydroxyapatite (HAp: Ca 10 (PO 4 ) 6 (OH) 2 ) was synthesized by aqueous precipitation using CaCl 2 and Na 3 PO 4 with NaOH added to ensure completion of the reaction at room temperature. The HAp powder prepared using stoichiometric amounts of NaOH was stable even at 1200°C, but the HAp prepared with sub‐stoichiometric amounts of NaOH resulted in its transformation into β‐tricalcium phosphate at 600°C. The reaction pH, X‐ray diffraction, thermal analysis, scanning electron microscopy, Fourier transform infrared analyses and inductively coupled plasma‐optical emission spectroscopy were used to characterize the phase purity, thermal stability, morphology, and chemical composition of the synthesized HAp powder.
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