In-situ laser directed energy deposition of biomedical Ti-Nb and Ti-Zr-Nb alloys from elemental powders
Autor/a
Arias-González, Felipe
Rodríguez-Contreras, Alejandra
Barro, Oscar
Fernández Arias, Mónica
Lusquiños Rodríguez, Fernando
Gil Mur, Francisco Javier
Pou, Juan
Fecha de publicación
2021ISSN
2075-4701
Resumen
In order to achieve the required properties of titanium implants, more resources and research are needed to turn into reality the dream of developing the perfect implant material. The objective of this study was to evaluate the viability of the Laser Directed Energy Deposition to produce biomedical Ti-Nb and Ti-Zr-Nb alloys from elemental powders (Ti, Nb and Zr). The Laser Directed Energy Deposition is an additive manufacturing process used to build a component by delivering energy and material simultaneously. The material is supplied in the form of particles or wire and a laser beam is employed to melt material that is selectively deposited on a specified surface, where it solidifies. Samples with different compositions are characterized to analyze their morphology, microstructure, constituent phases, mechanical properties, corrosion resistance and cytocompatibility. Laser-deposited Ti-Nb and Ti-Zr-Nb alloys show no relevant defects, such as pores or cracks. Titanium alloys with lower elastic modulus and a significantly higher hardness than Ti grade 2 were generated, therefore a better wear resistance could be expected from them. Moreover, their corrosion resistance is excellent due to the formation of a stable passive protective oxide film on the surface of the material; in addition, they also possess outstanding cytocompatibility.
Tipo de documento
Artículo
Versión del documento
Versión publicada
Lengua
Inglés
Materias (CDU)
616.3 - Patología del aparato digestivo. Odontología
Palabras clave
Deposició d'energia dirigida per làser
Aliatges de titani
Microestructura
Resistencia a la corrosió
Citocompatibilitat
Deposición de energía dirigida por láser
Aleaciones de titanio
Microestructura
Resistencia a la corrosión
Citocompatibilidad
Laser directed energy deposition
Titanium alloys
Microstructure
Corrosion resistance
Cytocompatibility
Páginas
19
Publicado por
MDPI
Colección
11;8
Publicado en
Metals
Citación
Arias-González, Felipe; Rodríguez-Contreras, Alejandra; Punset, Miquel [et al.]. In-situ laser directed energy deposition of biomedical Ti-Nb and Ti-Zr-Nb alloys from elemental powders. Metals, 2021, 11(8), 1205. Disponible en: <https://www.mdpi.com/2075-4701/11/8/1205>. Fecha de acceso: 21 sep. 2021. DOI: 10.3390/met11081205
Número del acuerdo de la subvención
info:eu-repo/grantAgreement/MINECO/RTI2018-098075-B-C21
Este ítem aparece en la(s) siguiente(s) colección(ones)
- Odontologia [228]
Derechos
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