Study of Mg-Hydroxyapatite Composite with various composition of Hydroxyapatite which obtained From Cow Bones in Simulation Body Fluid (SBF)
Keywords:Keywordsâ€” Magnesium, hydroxyapatite from cow bone, composites
The objective of the present study was to synthesize biodegradable Mg-hydroxyapatite (Mg-HAp) composites for bone replacement. Hydroxyapatite (HAp) powders were synthesized from bioresources cow bone in a cost effective and ecofriendly way. Cow bone was converted to hydroxyapatite by a heat treatment method at different temperatures. Hydroxyapatite was characterized by X-ray diffraction (XRD) and scanning electron microscope (SEM), Energy Dispersive X-Ray spectroscopy (EDX) and FT-IR. The results show a uniform distribution of HAp with a crystal size range of 400-800 nm. The Mgâ€“HAp composites were prepared by mixing different amounts of HAp powders to Mg powder and finally the powder was pressed to make samples. The microstructure of Mgâ€“HAp composite was examined by optical microscope (OM).The results show a uniform distribution of HAp particles along the boundary between matrix particles.. The relative densities of the composites initially increased with increase the amount of HA addition. The theoretical and experimental hardness of the composites are compared withÂ the addition ofÂ 3 to 9 wt%Â HAp. Addition of HAp decreases the crystal size of the nanocomposites. The mechanical properties, i.e. hardnessÂ is evidently increased with increasing HAp content up to 5 wt%.
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