RT info:eu-repo/semantics/article
T1 A study of the electrochemical reactivity of titanium under cathodic polarization by means of combined feedback and redox competition modes of scanning electrochemical microscopy
A1 Souto, Ricardo Manuel
A1 Asserghine, Abdelilah
A1 Medvidović-Kosanović, Martina
A1 Nagy, Lívia
A1 Nagy, Géza
K1 Titanium biomaterial
K1 Thin titanium dioxide layers
K1 Cathodic polarization
K1 Corrosion resistance
K1 SECM
K1 Electron transfer reaction
AB The effect of cathodic polarization on the electrochemical behavior of the thin titaniumdioxide film formed by anodic pretreatment over pure commercial titanium metal forbiomaterial application was investigated in situ using scanning electrochemical microscopy(SECM). Quantitative information on the electron transfer rates (keff) at the titanium surfacewas obtained using the feedback operation of SECM using ferrocene-methanol (FcMeOH) aselectrochemical mediator. An increase of keff values with the increase of the negativepolarization was detected, a feature that correlates well with the decrease of titanium oxideresistance with increasing cathodic polarization observed using electrochemical impedancespectroscopy (EIS). In addition, SECM operation in the redox competition mode proved thathydrogen was absorbed in the surface oxide film leading to changes in conductivity andelectrochemical reactivity
LK http://riull.ull.es/xmlui/handle/915/19630
UL http://riull.ull.es/xmlui/handle/915/19630
LA en
NO Sensors and Actuators B. Chemical, 320 (2020) 128339. https://doi.org/10.1016/j.snb.2020.128339.
DS Repositorio institucional de la Universidad de La Laguna
RD 26-abr-2024