Characterization of biomedical Ti-35Nb-5Ta-7Zr alloy prepared by powder metallurgy route

Currently, researchers are concerned with preparing beta-Ti alloys with low Young's modulus, with biocompatible elements such as Nb, Ta, and Zr. Ti-35Nb-5Ta-7Zr (TNZT) alloy can be considered a well-known beta-Ti alloy which is utilised in different biomedical applications owing to its low Young's modulus and high biocompatibility. So, the preparation and characterisation of this alloy were studied. Ti-35Nb-5Ta-7Zr alloy is effectively prepared by powder metallurgy using 800 MPa compacting pressure and 18 h of sintering time (2 h at 500 degrees C and 16 h at 1200 degrees C), where X-ray diffraction, optical microscope analysis, and scanning electron microscope with Energy dispersive X-ray spectroscopy (SEM-EDS) ensure sintering success and true porosity of (23%) ensure the suitability of the used level for the compacting pressure. The Ti-35Nb-5Ta-7Zr samples fabricated by powder metallurgy have comparable mechanical properties and microstructure with those fabricated by the casting method. The high mechanical properties, good wear resistance in SBF solution, and low elastic modulus made this alloy a strong candidate for biomedical applications such as intramedullary nails, surgical plates, and joint replacement. Pr & eacute;sentement, les chercheurs s'int & eacute;ressent & agrave; pr & eacute;parer des alliages Ti-beta & agrave; faible module d'& eacute;lasticit & eacute;, avec des & eacute;l & eacute;ments biocompatibles tels que Nb, Ta et Zr. On peut consid & eacute;rer l'alliage Ti-35Nb-5Ta-7Zr (TNZT) comme un alliage Ti-beta bien connu, qui est utilis & eacute; dans des diff & eacute;rentes applications biom & eacute;dicales en raison de son faible module d'& eacute;lasticit & eacute; et de sa biocompatibilit & eacute; & eacute;lev & eacute;e. Donc, on a & eacute;tudi & eacute; la pr & eacute;paration et la caract & eacute;risation de cet alliage. L'alliage Ti-35Nb-5Ta-7Zr est pr & eacute;par & eacute; efficacement par la m & eacute;tallurgie des poudres en utilisant une pression de compaction de 800 MPa et 18 heures de temps de frittage (2 heures & agrave; 500 degrees C et 16 heures & agrave; 1200 degrees C), o & ugrave; la diffraction des rayons X, l'analyse au microscope optique et le microscope & eacute;lectronique & agrave; balayage avec spectroscopie & agrave; dispersion d'& eacute;nergie (MEB-EDS) assurent le succ & egrave;s du frittage et une porosit & eacute; r & eacute;elle de 23% assure la pertinence du niveau utilis & eacute; de la pression de compaction. Les & eacute;chantillons de Ti-35Nb-5Ta-7Zr fabriqu & eacute;s par la m & eacute;tallurgie des poudres ont des propri & eacute;t & eacute;s m & eacute;caniques et une microstructure comparables & agrave; ceux fabriqu & eacute;s par la m & eacute;thode de coul & eacute;e. Les propri & eacute;t & eacute;s m & eacute;caniques & eacute;lev & eacute;es, la bonne r & eacute;sistance & agrave; l'usure dans une solution de liquide organique simul & eacute; (SBF) et un faible module d'& eacute;lasticit & eacute; rendent cet alliage un candidat fort pour des applications biom & eacute;dicales telles que des clous intram & eacute;dullaires, des plaques chirurgicales et le remplacement d'articulation.