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Pàgina inicial > Articles > Articles publicats > Surface Modified β-Ti-18Mo-6Nb-5Ta (wt%) Alloy for Bone Implant Applications : |
Data: | 2023 |
Resum: | Commercially available titanium alloys such as Ti-6Al-4V are established in clinical use as load-bearing bone implant materials. However, concerns about the toxic effects of vanadium and aluminum have prompted the development of Al- and V-free β-Ti alloys. Herein, a new alloy composed of non-toxic elements, namely Ti-18Mo-6Nb-5Ta (wt%), has been fabricated by arc melting. The resulting single β-phase alloy shows improved mechanical properties (Young's modulus and hardness) and similar corrosion behavior in simulated body fluid when compared with commercial Ti-6Al-4V. To increase the cell proliferation capability of the new biomaterial, the surface of Ti-18Mo-6Nb-5Ta was modified by electrodepositing calcium phosphate (CaP) ceramic layers. Coatings with a Ca/P ratio of 1. 47 were obtained at pulse current densities, −j, of 1. 8-8. 2 mA/cm 2, followed by 48 h of NaOH post-treatment. The thickness of the coatings has been measured by scanning electron microscopy from an ion beam cut, resulting in an average thickness of about 5 μm. Finally, cytocompatibility and cell adhesion have been evaluated using the osteosarcoma cell line Saos-2, demonstrating good biocompatibility and enhanced cell proliferation on the CaP-modified Ti-18Mo-6Nb-5Ta material compared with the bare alloy, even outperforming their CaP-modified Ti-6-Al-4V counterparts. |
Ajuts: | European Commission 861046 Agencia Estatal de Investigación PID2020-116844RB-C21 Agència de Gestió d'Ajuts Universitaris i de Recerca 2021/SGR-00651 Agència de Gestió d'Ajuts Universitaris i de Recerca 2021/SGR-00122 |
Drets: | Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original. |
Llengua: | Anglès |
Document: | Article ; recerca ; Versió publicada |
Matèria: | Titanium alloy ; Electrodeposition ; Ceramic coating ; Indentation ; Corrosion resistance ; Cell proliferation |
Publicat a: | Journal of Functional Biomaterials, Vol. 14, Issue 2 (February 2023) , art. 94, ISSN 2079-4983 |
20 p, 4.1 MB |