Crystallite size study of nanocrystalline hydroxyapatite and ceramic system with titanium oxide obtained by dry ball milling
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High energy dry ball milling has been used to produce nanocrystallite powders of Hydroxyapatite (HAP) using the starting materials Ca(H2PO4)2 and Ca(OH)2. The calcium phosphate system with titanium (CaP-Ti) were prepared with the raw materials Ca(H2PO4)2 and TiO2. The HAP was obtained after a couple of hours of milling (5, 10 and 15 h) and in the reaction with CaP-Ti was obtained after 5 h of milling. The HAP and the ceramic calcium phosphate with titanium (CaP-Ti) were studied by X-Ray powder Diffraction and Scanning Electron Microscopy (SEM). The grain size analysis through XRD shows that the particle size of HAP increase of the milling time and the size of CaTi4P6O24 decrease with the increase of the milling time.
KeywordsTiO2 Milling Hydroxyapatite Milling Time Rietveld Refinement
This work was partly sponsored by CAPES (Brazilian agency) and UIFSCOSD Physics Department University of Aveiro – Portugal.
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