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Improving mechanical properties and antibacterial response of α/β ternary Ti–Ta alloy foams for biomedical uses
dc.contributor.author | Aguilar, C. | |
dc.contributor.author | San Martín, F. | |
dc.contributor.author | Martínez, C. | |
dc.contributor.author | Cámara, B. | |
dc.contributor.author | Claverías, F. | |
dc.contributor.author | Undabarrena, A. | |
dc.contributor.author | Sancy, M. | |
dc.contributor.author | Salinas, V. | |
dc.contributor.author | Muñoz, L. | |
dc.date.accessioned | 2024-04-10T00:24:36Z | |
dc.date.available | 2024-04-10T00:24:36Z | |
dc.date.issued | 2023 | |
dc.identifier | 10.1016/j.jmrt.2023.05.115 | |
dc.identifier.issn | 22387854 | |
dc.identifier.uri | https://hdl.handle.net/20.500.12728/10444 | |
dc.description.abstract | This study investigates the potential of Ti–Ta–Sn alloys for biomedical applications due to their excellent mechanical properties and biocompatibility, with a particular focus on their use in trabecular bone replacement. This work aims to analyze the influence that of Sn has on the mechanical properties and antibacterial response of α−β ternary Ti–13Ta–xSn (x:3, 6, 9, and 12 at.%) alloy foams. The Ti-based alloys were designed considering three aspects; (i) final microstructure, (ii) alloying element types, and (iii) thermodynamics while using MAAT and ThermoCalc software. The alloys were obtained by mechanical alloying, with used milling times being 30 h for Ti–13Ta–3Sn, 10 h for Ti–13Ta–6Sn, 10 h for Ti–13Ta–9Sn, and 15 h for Ti–13Ta–12Sn. The foams were obtained using NaCl as the space holder (50 v/v% porosity) and consolidated by a hot pressing method at 780 °C for 30 min, applying a load of 40 MPa. Both the Staphylococcus aureus ATCC 6538 strain and Escherichia coli ATCC 8739 strain were used to evaluate the antibacterial responses of Ti-based alloy foams. The Ti-based alloy foams were composed mostly by a mix of α and β-phases. The metallic foams exhibited relative homogeneous pore distribution with a size between 100 and 450 μm and having an average porosity slightly higher than 50%. The samples showed elastic modulus values between 1 and 2 GPa, compressive yield strengths over 150 MPa, and microhardness over 450 HV. All Ti-based alloy foams showed no antibacterial activity nor bacterial adhesion, indicating that there is bacterial adhesion inhibition. © 2023 The Authors | es_ES |
dc.description.sponsorship | FONDEQUIP, (11220774); Fondo Nacional de Desarrollo Científico y Tecnológico, FONDECYT, (1190797, 1230620); Agencia Nacional de Investigación y Desarrollo, ANID | es_ES |
dc.language.iso | en | es_ES |
dc.publisher | Elsevier Editora Ltda | es_ES |
dc.subject | Hardness | es_ES |
dc.subject | Powder methods | es_ES |
dc.subject | Titanium alloys | es_ES |
dc.subject | X-ray analysis | es_ES |
dc.title | Improving mechanical properties and antibacterial response of α/β ternary Ti–Ta alloy foams for biomedical uses | es_ES |
dc.type | Article | es_ES |