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| Titel: |
Corrosion behaviour of a beta-titanium alloy |
| Auteur: |
Martin, Edith Manceur, Aziza Polizu, Stéfania Savadogo, Oumarou Wu, Ming H. Yahia, L'Hocine |
| Verschenen in: |
Bio-medical materials and engineering |
| Paginering: | Jaargang 16 (2006) nr. 3 pagina's 171-182 |
| Jaar: |
2006-02-27 |
| Inhoud: |
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. |
| Uitgever: |
IOS Press |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 2 van 7 gevonden artikelen
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