Surface and corrosion electrochemical characterization of titanium foams for implant applications

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DOIResolve DOI: http://doi.org/10.1149/1.2128098
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TypeArticle
Journal titleJournal of the Electrochemical Society
ISSN0013-4651
1945-7111
Volume153
Issue1
PagesB13B21
Subjecttitanium; metal foams; corrosion; electrochemical impedance spectroscopy; porous materials; current density; voltammetry (chemical analysis); biomedical materials
AbstractElectrochemical impedance spectroscopy has been revealed to be a useful tool to evaluate the exposed surface area and consequently to evaluate the corrosion behavior of titanium foams intended for biomedical applications. In order to find the most accurate corrosion assessment, a new equivalent circuit involving a porous model in series with a double layer model was proposed to fit the experimental data. Although seldom used in the literature, such technique could be useful for the characterization of porous media. Determining corrosion potentials and current densities, the titanium foams have revealed to be slightly more resistant to corrosion in simulated body fluid solutions at 37°C under static mode (no stress applied to the samples) compared to dense and polished titanium. The best titanium foams exibited penetration rates around . Cyclic voltammetry experiments have shown that the titanium oxide layer stability was not affected by the fabrication process of the foams.
Publication date
LanguageEnglish
AffiliationAutomotive and Surface Transportation; NRC Industrial Materials Institute; National Research Council Canada
Peer reviewedYes
NPARC number21277288
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Record identifiere106a1cb-f7c6-40f8-84d6-d9c761ec499f
Record created2016-02-04
Record modified2016-05-09
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