Transformation of a ceramic precursor to a biomedical (metallic) alloy: Part I – sinterability of Ta2O5 and TiO2 mixed oxides

Mixed Ta 2 O 5 – TiO binary system was studied by a combination of differential thermal analysis (DTA), scanning electron microscopy-energy dispersive spectrometry (SEM-EDS), X-ray diffraction (XRD) and in situ high temperature (HT-XRD) techniques. Different compositions the mixed oxide powders were fabricated ball–milling powdered compositions, pelletizing homogenized composite powders, heating green pellets air at different temperatures for fixed time intervals. The sintered evaluated characterized with respect to porosity, morphology, phase distribution. DTA runs un-sintered indicated onset both exothermic endothermic changes system. Significant amount sintering observed take place higher than 900 °C. Both room patterns exhibited consistency formation. A ternary compound (TaTiO 4 ) solid solution (Ti 0.33 0.67 form addition respective phases (Ta ). range 900–1000 °C be adequate achieve requisite mechanical strength optimum internal porosity (40–48%) subsequent electrochemical polarization experiments.