TY - JOUR ID - 79223 TI - Processing and Characterization of Natural Hydroxyapatite Powder from Bovine Bone JO - Journal of Ultrafine Grained and Nanostructured Materials JA - JUFGNSM LA - en SN - 2423-6845 AU - Shabani, Mahsa AU - Faraji, Ghader AD - School of Mechanical Engineering, College of Engineering, University of Tehran, Tehran, Iran. Y1 - 2020 PY - 2020 VL - 53 IS - 2 SP - 204 EP - 209 KW - Hydroxyapatite KW - Bovine bone KW - Annealing KW - Characterization DO - 10.22059/jufgnsm.2020.02.12 N2 - In this paper, hydroxyapatite powder is produced via annealing of Bovine bone. The as received bovine bone was annealed at three different temperatures of 400 ℃, 700 ℃, and 1000 ℃ after a primary preparation stage. The powders obtained from annealed bovine bone were analyzed and characterized by Scanning Electron Microscope (SEM), X-Ray Diffraction (XRD), and Energy-Dispersive X-ray (EDX) spectroscopy. The XRD analysis showed that the annealed bone at 1000℃ is pure hydroxyapatite, at 700 ℃, it is mostly hydroxyapatite, and at 400℃, there are not enough hydroxyapatite crystals. The morphology of the samples was analyzed by SEM. It was observed that the bone annealed at 1000 ℃ exhibits human bone-like matrix particle shapes while at 400 ℃, and 700 ℃, the irregular shape exists. EDX analysis showed that Ca, P, C, and O were detected in the samples, while Ca and P were the major components. Also, the Ca/P ratios were more than 1.67, which is the ratio of stoichiometric hydroxyapatite. UR - https://jufgnsm.ut.ac.ir/article_79223.html L1 - https://jufgnsm.ut.ac.ir/article_79223_9983594dcdd8e6f7878d148e2fca05cf.pdf ER -