Repositorio UFRO · Omeka S

Improving mechanical properties and antibacterial response of a/b ternary Ti-Ta alloy foams for biomedical uses

Primer Autor	Aguilar, Claudia
Co-autores	Martin, F. San Martinez, C. Camara, B. Claverias, F. Undabarrena, A. Sancy, M. Salinas, V. Munoz, L.
Título	Improving mechanical properties and antibacterial response of a/b ternary Ti-Ta alloy foams for biomedical uses
Editorial	ELSEVIER
Revista	JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
Lenguaje	en
Resumen	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 a -b 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 & DEG,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 a and b-phases. The metallic foams exhibited relative homogeneous pore distribution with a size between 100 and 450 mm and having an average porosity slightly higher than 50%. The samples showed elastic modulus values be-tween 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.& COPY, 2023 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
Fecha Publicación	2023
Tipo de Recurso	artículo original
doi	10.1016/j.jmrt.2023.05.115
Formato Recurso	PDF
Palabras Claves	Hardness X-ray analysis Titanium alloys Powder methods
Ubicación del archivo	http://dx.doi.org/10.1016/j.jmrt.2023.05.115
Categoría OCDE	Ciencia de Materiales Metalurgia e Ingeniería Metalúrgica
Materias	Dureza análisis de rayos X Aleaciones de titanio Métodos en polvo
Página de inicio (Recomendado-único)	8735.0
Página final (Recomendado-único)	8753
Identificador del recurso (Mandatado-único)	artículo original
Versión del recurso (Recomendado-único)	versión publicada
License	CC BY-NC-ND 4.0
Condición de la licencia (Recomendado-repetible)	CC BY-NC-ND 4.0
Derechos de acceso	acceso abierto
Access Rights	acceso abierto
Id de Web of Science	WOS:001021902700001
ISSN	2238-7854
Tipo de ruta	Verde# dorado
Categoría WOS	Ciencia de Materiales Metalurgia e Ingeniería Metalúrgica
Referencia del Financiador (Mandatado si es aplicable-repetible)	ANID-FONDECYT 1190797 ANID-FONDECYT 1230620 ANID-FONDEQUIP EQM140095 ANID-FONDECYT 11220774 MIGA ICN2021_023 ANID FONDECYT 1190797 ANID FONDECYT 1230620 ANID FONDEQUIP EQM140095 ANID FONDECYT 11220774