To perform the coating procedure on Ti-6Al-4V substrate, nanosized hydroxyapatite powder was synthesized and used. In order to prepare nanohydroxy apatite powder we extracted the fat and bone marrow ofa camel femur bone and left it in an oven for 20 min at 55℃ to eliminate the moisture. Then it was exposed to the flame of a torch for 160 min. The obtained bone ash was milled in a high energy planetary mill for 5 h with a ball to powder ratio of 50:1 and a milling speed of 300 rpm. Finally the milled ashes were exposed to thermal treatment for 90 min at 650℃ as obtained by thermal analysis.
Figure 1 shows the X-ray diffraction of the synthe-sized hydroxyapatite nanopowders used for the coating process.
Fig. 1. X-ray diffraction pattern and Rietveld analysis of the hydroxyapatite nanopowder used for the coating process.
The X-ray diffraction pattern of the used powder showed wide and broad peaks with low intensity that can be referred to the formation of nanostructured hydroxyapatite particles.The crystallite size was calculated by the Rietveld method to be 19.7 nanometers.Furthermore pure hydroxyapatite was present.
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