In this study, dense, fine-grained biphasic calcium phosphate bioceramics were designed via the two-step sintering method. The starting powder was nanosized calcium-deficient hydroxyapatite, whose phase composition, average particle size and morphology were characterized by XRD, FTIR, Raman spectroscopy, laser diffraction and FE-SEM. The phase transformations of the initial powder during heating up to 1200. °C were examined using TG/DSC. At first, conventional sintering was performed and the recorded shrinkage/densification data were used to find out the appropriate experimental conditions for two-step sintering. The obtained results show that two-step sintering yields BCP ceramics, consisting of hydroxyapatite and β-TCP, with full dense, homogeneous structure with average grain size of 375. nm. Furthermore, BCP ceramics obtained by the two-step sintering method exhibit improved mechanical properties, compared to conventionally sintered BCP. © 2010 Elsevier Ltd.
CITATION STYLE
Lukić, M., Stojanović, Z., Škapin, S. D., Maček-Kržmanc, M., Mitrić, M., Marković, S., & Uskoković, D. (2011). Dense fine-grained biphasic calcium phosphate (BCP) bioceramics designed by two-step sintering. Journal of the European Ceramic Society, 31(1–2), 19–27. https://doi.org/10.1016/j.jeurceramsoc.2010.09.006
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