RT info:eu-repo/semantics/article
T1 A novel scanning electrochemical microscopy strategy for the investigation of anomalous hydrogen evolution from AZ63 magnesium alloy
A1 Souto, Ricardo Manuel
A1 Filotás, Dániel
A1 Fernández Pérez, Bibiana María
A1 Nagy, Lívia
A1 Nagy, Géza
K1 magnesium alloys
K1 corrosion
K1 hydrogen evolution
K1 scanning electrochemical microscopy
K1 scanning vibrating electrode technique
AB The evolution of hydrogen gas from corroding magnesium arises not exclusively from thecathodic half-cell reaction due to the consumption of the electrons released by the dissolvingmetal, but anodized magnesium generates significant amounts of H2 gas as well. In addition,the increase of the anodic overpotential enhances the rate of hydrogen gas generation.Therefore, spatially-resolved detection of the actual sites for hydrogen evolution related toanodically-activated sites is attempted using scanning electrochemical microscopy (SECM).This work describes a new experimental procedure for SECM based on a three-step (off-onoff)anodization operation sequence that was designed to obtain new insights into the behaviorof magnesium and magnesium alloys when they are subjected to anodic polarization. Resultsobtained with scanning electrochemical microscopy (SECM) and scanning vibrating electrodetechnique (SVET) experiments presented here demonstrate the catalytic properties of themagnesium-oxide film for the hydrogen-evolution reaction
YR 2020
FD 2020
LK http://riull.ull.es/xmlui/handle/915/18954
UL http://riull.ull.es/xmlui/handle/915/18954
LA en
DS Repositorio institucional de la Universidad de La Laguna
RD 03-may-2024