Electrochemical behavior of near-beta titanium biomedical alloys in phosphate buffer saline solution

Dalmau, A.; Pina, V. Guiñón; Devesa, F.; Amigó, V.; Muñoz, A. Igual

doi:10.1016/j.msec.2014.11.036

Cited by 33 publications

(33 citation statements)

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“…The charge (Q) is proportional to the oxidized cations and it increases with the applied potential and with the Sn content. This trend is in good agreement with the previously reported passivation behavior of Ti30NbxSn alloys [15]. The evolution of the open circuit potential with time of the titanium alloys is monitored before, during and after the sliding and it is shown in Figure 4.…”

Section: 2electrochemical Measurementssupporting

confidence: 90%

“…These potentials have been selected according to the cathodic and passive domains of the considered alloys and analyzed in previous paper [15]. This kind of test allows for fixing a well-define surface chemistry and to measure the electrochemical kinetics through the current measurement.…”

Section: 4tribocorrosion Testsmentioning

confidence: 99%

“…Sn favors to the titanium-niobium due to its relatively low melting point and form a liquid phase in the sintering phase [14]. However, it has been also shown that Sn dissolves preferentially in the Ti30Nb alloys, decreasing the corrosion resistance when adding above 2% in Sn [15]. With respect to the effect of Sn on the mechanical behavior of TiNbSn alloys, several studies have shown that microstructure and the mechanical properties of hot rolled Ti-35Nb-XSn alloys (x = 2.5; 5.0; 7.5) depends on Sn addition into the Ti-35Nb alloys which helps stabilizing the β phase and the mechanical behavior of those alloys up to 6.25 .…”

Section: Introductionmentioning

confidence: 99%

“…For example, the presence of niobium in the alloy enhances the passivation characteristics of the film by decreasing the concentration of the anion vacancies in the TiO 2 film [3]. Indeed, previous studies on TiNbSn alloys [15] in a phosphate buffered solution showed that the addition of 2% wt. of Sn increases the corrosion resistance and decreases the elastic modulus and the porosity of the alloy.…”

Section: Introductionmentioning

confidence: 99%

“…

ElsevierGuiñon Pina, V.; Dalmau, A.; Amigó Borrás, V. (2015).

Abstract

The tribo-electrochemical behavior of different  titanium alloys for biomedical applications sintered by powder metallurgy has been investigated.

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mentioning

confidence: 99%

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Tribocorrosion behavior of beta titanium biomedical alloys in phosphate buffer saline solution

Pina

Dalmau

Devesa

et al. 2015

Journal of the Mechanical Behavior of Biomedical Materials

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ElsevierGuiñon Pina, V.; Dalmau, A.; Amigó Borrás, V. (2015). AbstractThe tribo-electrochemical behavior of different  titanium alloys for biomedical applications sintered by powder metallurgy has been investigated. Different mechanical, electrochemical and optical techniques were used to study the influence of the chemical composition, Sn content, and the electrochemical conditions on the tribocorrosion behavior of those alloys Ti30NbxSn alloys (where "x" is the weight percentage of Sn content, 2% and 4%).Sn content increases the active and passive dissolution rate of the titanium alloys, thus increasing the mechanically activated corrosion under tribocorrosion conditions. It also increases the mechanical wear of the alloy. Prevailing electrochemical conditions between -1 and 2 V influences the wear accelerated corrosion by increasing it with the applied potential and slightly increases the mechanical wear of Ti30Nb4Sn.Wear accelerated corrosion can be predicted by existing models as a function of electrochemical and mechanical parameters of the titanium alloys.

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Section: 2electrochemical Measurementssupporting

confidence: 90%

Section: 4tribocorrosion Testsmentioning

confidence: 99%