Journal
CURRENT APPLIED PHYSICS
Volume 8, Issue 3-4, Pages 270-272Publisher
ELSEVIER
DOI: 10.1016/j.cap.2007.10.076
Keywords
nanomaterials; nanopowders; milling time; nanostructure; bioceramics
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Nanocrystalline hydroxyapatite (HA) powder was synthesized from natural bovine bone by a vibro-milling method. The bovine bone had been deproteinized by hot water before it was calcined at 800 degrees'C for 3 h. The resulting product was crushed into small pieces and milled in a ball mill pot for 24 h. After that the powders were ground by the vibro-milling method with various milling times. Characteristics of the powders were then investigated by X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM) and energy dispersive X-ray analysis (EDS). Nanocrystalline HA powder with diameter less than 100 nm were revealed from the samples using vibro-milling time of 2 h, 4 h and 8 h. Ca/P molar ratio in the powder was 1.66 which is close to the theoretical value that found in the pure hydroxyapatite. (c) 2007 Elsevier B.V. All rights reserved.
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