Abstract

• Bioceramics made of hydroxyapatite [Ca10(PO4)6(OH)2: HAP] would be good example of bioactive materials. In the other hand, bones graft made of Beta-Tricalcium Phosphate [Ca3(PO4)2: β-TCP] appears to be an example of bioresorbable materials. Based on this background, biphasic calcium phosphate comprising of Hydroxyapatite and Beta-Tricalcium Phosphate (HAP- β-TCP) has been prepared in this work. White Coral (Anthozoa Cnidria) has been used to produce biphasic calcium phosphates by mechano-chemical method. X-Ray Diffraction (XRD) analysis has confirmed the presence of HAP and β-TCP in major proportions along with Calcium Carbonate (CaCO3) and Calcium Oxide (CaO) in traces revealing the biphasic calcium phosphate nature of synthetic powders. Crystallite size and lattice parameters at different calcination temperatures of 900°C, 1000°C and 1100°C have been calculated and compared. Fourier Transform Infrared (FTIR) spectroscopy has also been confirmed the presence of various chemical ions groups. The surface topography, morphology and agglomerated distribution of the biphasic particles have been characterized by using Scanning Electron Microscopy (SEM). Importantly, the hardness of the biphasic calcium phosphate at different calcination temperatures has been determined for future application as bone replacement.