Characterization and Evaluation of Ti-12Mo-3Ag Alloy Fabricated for Biomedical Applications by Powder Metallurgy
摘要
This investigation explores the characteristics of Ti-12Mo-3Ag alloy produced through the powder metallurgy method, aiming for its application in biomedical fields. Density and microstructure using optical microstructure (OM), scanning electron microscopy (SEM), and energy dispersive x-ray analysis (EDX) were examined in the sintered Ti-12Mo-3Ag alloy. The alloys’ phase composition was examined using x-ray diffraction (XRD), revealing the existence of both alpha and beta phases, with the beta phase being predominant. The mechanical properties were assessed through Vickers hardness and compression tests, showing a hardness of 360 ± 10 HV and an ultimate compressive strength of 1600 MPa, indicating the material's suitability for load-bearing applications. The alloy’s electrochemical performance is simulated body fluid (SBF), and saline with varying hydroxyapatite (HA) concentrations was examined, demonstrating enhanced corrosion resistance with increased HA content. The corrosion rate (CR) in SBF is 30.18 µm/y, which decreases to 4.5, 2.05, and 1.49 µm/y with the addition of 1, 2, and 3 g of HA, respectively. Similarly, in saline, the CR is 17.3 µm/y, reducing to 12.75, 11.73, and 1.58 µm/y with the same HA additions. The SEM and EDX analyses characterized the corroded alloy’s surface morphology and elemental composition. The results suggest that Ti-12Mo-3Ag alloy, with its favorable physical and mechanical properties and corrosion resistance, is a promising candidate for use in biomedical applications.