Synthesis of Hydroxyapatite Coating on Acid-Etched Titanium via Hydrothermal Method for Biomedical Applications: Effect of Temperature, Time, and pH Factor

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Abstract In this study, hydroxyapaptite (HAp) has been successfully coated on acid-etched titanium substrate by hydrothermal method. The phase composition and surface morphology of HAp have been analyzed by X-ray diffraction, digital microscopy images, and scanning electron microcopy analysis. Biocompability of the HAp coating has been evaluated by SBF immersion test and in vitro baby hamster kidney (BHK) cell attachment. The optimal parameters such as temperature, time, and pH of the hydrothermal process have been established. The HAp coating has a single-phase HAp structure with hexagonal symmetry as hydrothermal process at temperature of 240°C, pH value of 10 and coating time of 24 h. The HAp coating has great applicability in biomedical materials because of its high biocompatibility.

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