English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/171336
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:

Sol-gel deposition of hydroxyapatite coatings on porous titanium for biomedical applications

AuthorsDomínguez-Trujillo, C.; Peón, E.; Chicardi, E. ; Pérez, H.; Rodríguez-Ortiz, J. A.; Pavón, J.; García-Couce, J.; Galván Sierra, Juan Carlos; García-Moreno, F.; Torres, Y.
Porous titanium
Issue Date2018
CitationSurface and Coatings Technology 333: 158-162 (2018)
AbstractThe stress shielding and the poor osseointegration in titanium implants are still problems to be resolved. In this context, this work proposes a balanced solution. Titanium samples were fabricated, with a porosity of 100–200 μm of pore size employing space-holder technique (50 vol% NHHCO, 800 MPa at 1250 °C during 2 h under high vacuum conditions), obtaining a good equilibrium between stiffness and mechanical resistance. The porous titanium substrates were coated with hydroxyapatite, obtained by sol-gel technique: immersion, dried at 80 °C and heat treatment at 450 °C during 5 h under vacuum conditions. Phases, surface morphology and interfacial microstructure of the transverse section were analyzed by Micro-Computed Tomography, SEM and confocal laser, as well as the infiltration capability of the coating into the metallic substrate pores. The FTIR and XRD showed the crystallinity of the phases and the chemical composition homogeneity of the coating. The size and interconnected pores obtained allow the infiltration of hydroxyapatite (HA), possible bone ingrowth and osseointegration. The scratch resistance of the coating corroborated a good adherence to the porous metallic substrate. The coated titanium samples have a biomechanical and biofunctional equilibrium, as well as a potential use in biomedical applications (partial substitution of bone tissue).
Publisher version (URL)https://doi.org/10.1016/j.surfcoat.2017.10.079
Identifiersdoi: 10.1016/j.surfcoat.2017.10.079
issn: 0257-8972
Appears in Collections:(CENIM) Artículos
Files in This Item:
File Description SizeFormat 
accesoRestringido.pdf15,38 kBAdobe PDFThumbnail
Show full item record
Review this work

Related articles:

WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.