Corrosion behaviour of a beta-titanium alloy.
In: Bio-Medical Materials & Engineering, Jg. 16 (2006-06-01), Heft 3, S. 171-182
academicJournal
Zugriff:
The beta-titanium alloy, a particular type of titanium, has been investigated as a biomaterial because of its good mechanical performances and its high corrosion resistance and biocompatibility. This work focuses on the corrosion performance of a β-titanium alloy of composition Ti–11Mo–2V–4Nb–3Al in Hank's physiological solution. Potentiodynamic tests were performed from -0.25 V to 3.5 V; the breakdown potential was not reached. To observe the behaviour of the alloy while submitted to long-term aggressive conditions, 1, 4 and 8 cycles of cyclic polarization were carried out. Results show a high resistance of the alloy to corrosion and a stabilization of the surface after several corrosion cycles. Pitting was not observed and a fast ability of the surface to repassivate was noticed. The surface was characterized by different techniques before and after corrosion testing. Following the corrosion tests, X-ray Photoelectron Spectroscopy (XPS) showed the presence of calcium and phosphorus, an increase of the oxide layer was measured by Auger Electron Spectroscopy (AES), a relatively smooth surface was visualised by Scanning Electron Microscopy (SEM) and contact-angle measurements showed that the surface energy increased. [ABSTRACT FROM AUTHOR]
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Titel: |
Corrosion behaviour of a beta-titanium alloy.
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Autor/in / Beteiligte Person: | Martin, Edith ; Manceur, Aziza ; Polizu, Stéfania ; Savadogo, Oumarou ; Wu, Ming H. ; Yahia, L'Hocine |
Zeitschrift: | Bio-Medical Materials & Engineering, Jg. 16 (2006-06-01), Heft 3, S. 171-182 |
Veröffentlichung: | 2006 |
Medientyp: | academicJournal |
ISSN: | 0959-2989 (print) |
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