In-situ laser directed energy deposition of biomedical Ti-Nb and Ti-Zr-Nb alloys from elemental powders
Author
Arias-González, Felipe
Rodríguez-Contreras, Alejandra
Punset fuste, Miquel
Manero, José María
Barro, Oscar
Fernández Arias, Mónica
Lusquiños Rodríguez, Fernando
Gil Mur, Francisco Javier
Pou, Juan
Publication date
2021ISSN
2075-4701
Abstract
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.
Document Type
Article
Document version
Published version
Language
English
Subject (CDU)
616.3 - Pathology of the digestive system. Complaints of the alimentary canal
Keywords
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
Pages
19
Publisher
MDPI
Collection
11;8
Is part of
Metals
Citation
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
Grant agreement number
info:eu-repo/grantAgreement/MINECO/RTI2018-098075-B-C21
This item appears in the following Collection(s)
- Odontologia [228]
Rights
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Except where otherwise noted, this item's license is described as https://creativecommons.org/licenses/by/4.0/