Journalartikel

Jahr der Veröffentlichung: 2015

Seiten: 213-222

Zeitschrift: Applied Surface Science

Bandnummer: 335

ISSN: 0169-4332

DOI Link: https://doi.org/10.1016/j.apsusc.2015.02.058

Verlag: Elsevier

Abstract: 
Beta-phase Ti-Nb-based alloys are considered as new generation of biomaterials with improved mechanical compatibility for load-bearing implant applications. Small homogeneously dissolved In additions have a positive impact on the elastic properties of beta-type Ti-40Nb. For (Ti-40Nb)-41n the best match between low Young's modulus, high elastic energy and appropriate strength was achieved. In the present study the effect of In addition to Ti-40Nb on the corrosion and passivation behavior in Ringer's solution is assessed by means of potentiodynamic polarization, ICP-OES metal release analysis, XPS and ToFSIMS for passive film characterization. Like Ti-40Nb, (Ti-40Nb)-41n exhibits very low corrosion rates (i(corr) = 0.1-0.2 mu A/cm(2)) and stable anodic passivity (i(pass) = 3-4 mu A/cm(2)). Small In additions do not have a detectable effect on the anodic response of the alloy. For both beta-phase alloys metal release rates are below the quantification limits of ICP-OES. Their strong passivating nature is governed by the formation of thin barrier-type Ti- and Nb-oxide films. Passive films on (Ti-40Nb)-4In surfaces which were formed during OCP exposure or anodic polarization comprise oxidized In species (In2O3, In(OH3)). From the viewpoint of corrosion stability (Ti-40Nb)-41n appears to be suitable for implant applications. 2015 Published by Elsevier B.V.

Harvard-Zitierstil: Gebert, A., Oswald, S., Helth, A., Voss, A., Gostin, P., Rohnke, M., et al. (2015) Effect of indium (In) on corrosion and passivity of a beta-type Ti-Nb alloy in Ringer's solution, Applied Surface Science, 335, pp. 213-222. https://doi.org/10.1016/j.apsusc.2015.02.058

APA-Zitierstil: Gebert, A., Oswald, S., Helth, A., Voss, A., Gostin, P., Rohnke, M., Janek, J., Calin, M., & Eckert, J. (2015). Effect of indium (In) on corrosion and passivity of a beta-type Ti-Nb alloy in Ringer's solution. Applied Surface Science. 335, 213-222. https://doi.org/10.1016/j.apsusc.2015.02.058