توليد سراميك زيست سازگار هيدروكسي آپاتيت از خاكستر استخوان و بررسي اثر دماي فرآيند توليد بر خلوص فازي و تركيب شيميايي آن

Effect of Heat Treatment Temperature on Chemical Properties of Extracted Hydroxyapatite from Bovine Bone

Hydroxyapatite powder was prepared by burning bone and beat treating the obtained bone ash at 600, 700, 800 and 1100 C in an air furnace. The black ash was converted to a white powder after heat treatment. X-ray diffraction analysis and Fourier transform infra - red spectroscopy indicated that the white powder was hydroxyapatite and did not contain any organic components of the bone. Furthermore, phase transformation of the resulted hydroxyapatite to other calcium phosphate phases did not occur up to 1100C. The resulted material was found to be thermally stable up to 1100°C. The density of natural hydroxyapatite heat treated at 800°C was measured to be 3.187 g/cm3.