Abstract
Hydroxyapatite (HA) is an important material for biomedical implants, because its chemical composition is similar to that of bone tissue. This study focuses on the effect of sintering temperature and the amount of reinforcement phase on the mechanical properties of HA–Ti composites. Firstly, the production of hydroxyapatite powders that are consistent with the natural bone tissue was planned by means of chemical precipitation method. Secondly, the titanium element was added into this hydroxyapatite powder mixture by different amounts to investigate the change of mechanical properties. Titanium isopropoxide, Ti(OCH(CH3)2)4, was used as titanium supplier. These were solved and added into calcium solution without phosphate solution addition. In total, 0.5, 1, 2 and 4 mol% Ti were added into pure hydroxyapatite obtained by chemical precipitation method. The powders including different amounts of Ti additions were dried after the precipitation process and exposed to calcination at different temperatures in order to detect the phases obtained during the process. Microstructures have been investigated by SEM and EDS, and the phase analysis has been determined by the X-ray diffraction analysis, FTIR, DTA-TG and Raman spectrometers. The grain size and apparent density were measured. These results showed that titanium could enter into HA.
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Özbek, Y.Y., Erdem Baştan, F., Canikoğlu, N. et al. The experimental study of titanium-ions into hydroxyapatite by chemical precipitation. J Therm Anal Calorim 125, 651–658 (2016). https://doi.org/10.1007/s10973-016-5335-8
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DOI: https://doi.org/10.1007/s10973-016-5335-8