فهرست نشریات علمی دسترسی آزاد ایران

Aluminum (Al) and vanadium (V) are known to exhibit cytotoxic effects; nevertheless, titanium-based alloys have been widely employed in biomedical implants. Recent research has therefore focused on the development of Al- and V-free titanium alloys incorporating non-cytotoxic β-stabilizing elements such as molybdenum (Mo). In this study, the influence of Mo content on the structural, microstructural, and mechanical properties of Ti–xMo alloys (x = 25, 30, and 35 wt.%) was systematically investigated. The prepared nano-powders were characterized before and after sintering at 1150 °C using X-ray diffraction (XRD), field-emission scanning electron microscopy (FE-SEM), energy-dispersive X-ray spectroscopy (EDX), and Vickers micro-hardness testing. FE-SEM analysis revealed distinct Ti and Mo nanoparticle morphologies and sintering-induced particle growth with spherical features governed by Mo content and enhanced atomic diffusion. A reduction in particle size at 35 wt.% Mo was attributed to solubility limits and saturation effects within the titanium lattice. XRD and EDX analyses verified phase evolution without the presence of impurities and revealed partial oxide reduction after sintering. The titanium alloy containing 35 wt.% molybdenum exhibited the highest hardness value of 375 HV, representing a significant improvement compared to pure nanocrystal line titanium, which recorded a hardness of 170 HV. These results confirm the close relationship between structure and properties, making Titanium-Molybdenum alloys highly promising materials for use in advanced biomedical implant applications.