Please use this identifier to cite or link to this item:
http://hdl.handle.net/10773/20453
Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Stan, G. E. | pt |
dc.contributor.author | Popa, A. C. | pt |
dc.contributor.author | Galca, A. C. | pt |
dc.contributor.author | Aldica, G. | pt |
dc.contributor.author | Ferreira, J. M. F. | pt |
dc.date.accessioned | 2017-12-07T19:47:38Z | - |
dc.date.issued | 2013 | pt |
dc.identifier.issn | 0169-4332 | pt |
dc.identifier.uri | http://hdl.handle.net/10773/20453 | - |
dc.description.abstract | Bioglasses (BG) are the inorganic materials exhibiting the highest indices of bioactivity. Their appliance as films for bio-functionalization of metallic implant surfaces has been regarded as an optimal solution for surpassing their limited bulk mechanical properties. This study reports on magnetron sputtering of alkali-free BG thin films by varying the target-to-substrate working distance, which proved to play an important role in determining the films' properties. Post deposition heat-treatments at temperatures slightly above the glass transformation temperature were then applied to induce inter-diffusion processes at the BG/titanium substrate interface and strengthening the bonding as determined by pull-out adherence measurements. The morphological and structural features assessed by SEM-EDS, XRD, and FTIR revealed a good correlation between the formations of inter-metallic titanium silicide phases and the films' bonding strength. The highest mean value of pull-out adherence (60.3 +/- 4.6 MPa), which is adequate even for load-bearing biomedical applications, was recorded for films deposited at a working distance of 35 mm followed by a heat-treatment at 750 degrees C for 2 h in air. The experimental findings are explained on the basis of structural, compositional and thermodynamic considerations. (C) 2013 Elsevier B.V. All rights reserved. | pt |
dc.language.iso | eng | pt |
dc.publisher | ELSEVIER SCIENCE BV | pt |
dc.relation | info:eu-repo/grantAgreement/FCT/COMPETE/132936/PT | pt |
dc.rights | restrictedAccess | por |
dc.subject | BIOACTIVE GLASS COATINGS | pt |
dc.subject | IN-VITRO BEHAVIOR | pt |
dc.subject | THIN-FILMS | pt |
dc.subject | MECHANICAL-PROPERTIES | pt |
dc.subject | THERMAL-EXPANSION | pt |
dc.subject | GRADED COATINGS | pt |
dc.subject | SILICATE GLASS | pt |
dc.subject | TITANIUM | pt |
dc.subject | MICROSTRUCTURE | pt |
dc.subject | DEPOSITION | pt |
dc.title | Strong bonding between sputtered bioglass-ceramic films and Ti-substrate implants induced by atomic inter-diffusion post-deposition heat-treatments | pt |
dc.type | article | pt |
dc.peerreviewed | yes | pt |
ua.distribution | international | pt |
degois.publication.firstPage | 530 | pt |
degois.publication.lastPage | 538 | pt |
degois.publication.title | APPLIED SURFACE SCIENCE | pt |
degois.publication.volume | 280 | pt |
dc.date.embargo | 10000-01-01 | - |
dc.relation.publisherversion | 10.1016/j.apsusc.2013.05.022 | pt |
dc.identifier.doi | 10.1016/j.apsusc.2013.05.022 | pt |
Appears in Collections: | CICECO - Artigos |
Files in This Item:
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.