RT info:eu-repo/semantics/article
T1 Electrochemical characterization of ZrTi alloys for biomedical applications
A1 Souto, Ricardo Manuel
A1 Bolat, Georgiana
A1 Izquierdo Pérez, Javier
A1 Santana, Juan José
A1 Mareci, Daniel
K1 ZrTi alloys
K1 corrosion resistance
K1 cyclic potentiodynamic polarization curves
K1 EIS
K1 scanning electrochemical microscopy
K1 SEM
AB The electrochemical behaviour of three ZrTi alloys (Zr5Ti, Zr25Ti and Zr45Ti) in Ringer’s solution has been investigated. Their resistance against localized corrosion has been determined from cyclic potentiodynamic polarization (CCP) and electrochemical impedance spectroscopy (EIS) measurements, whereas scanning electrochemical microscopy (SECM) was applied to investigate the local reactivity of the passive films developed on the materials, and scanning electron microscopy (SEM) was employed to characterize the surface morphology of the alloys subjected to anodic polarization. An increased reactivity could be detected with SECM when the metal samples were polarized at +0.50 VSHE, though the extent of this feature greatly depended on the nature of the metallic material. At 37 0C, the Zr5Ti alloy was susceptible to localized corrosion. Though Zr25Ti alloy presented rather low pitting potential, the spontaneous corrosion potential of the material was sufficiently negative to require overpotentials around 600 mV for breakdown to occur. Finally, the Zr45Ti alloy exhibited a larger passive range in the polarization curve, and it was resistant to localized corrosion
YR 2013
FD 2013
LK http://riull.ull.es/xmlui/handle/915/19155
UL http://riull.ull.es/xmlui/handle/915/19155
LA en
DS Repositorio institucional de la Universidad de La Laguna
RD 06-may-2024