Preparation of hydroxyapatite fibers by the homogeneous precipitation method

This paper discussed the preparing process of hydroxyapatite fibers which were widely used as reinforcement for biomedical materials by homogeneous precipitation method. The needle-like hydroxyapatite crystals were synthesized in an aqueous system. They were transferred from precursors-dicalcium phosphate anhydrate and octacalcium phosphate crystals. The reaction conditions were well controlled in order to obtain crystals in given morphology. The products were characterized by X-ray powder diffractometry (XRD), scanning electron microscopy (SEM) and infrared spectroscopy (IR). They were verified to be hydroxyapatite crystals with needle-like in shape.