RT info:eu-repo/semantics/article
T1 Investigation of anomalous hydrogen evolution from anodized magnesium using a polarization routine for scanning electrochemical microscopy
A1 Souto, Ricardo Manuel
A1 Filotás, Dániel
A1 Fernández-Pérez, Bibliana María
A1 Nagy, Lívia
A1 Nagy, Géza
A2 Química
A2 Proyecto CTQ2018-80522-P
Grupo de Electroquímica y CorrosiónInstituto de Materiales y Nanotecnología
K1 anodic polarization
K1 anomalous hydrogen evolution
K1 corrosion
K1 magnesium
K1 scanning electrochemical microscopy
AB With the goal to facilitate a new experimental procedure for the monitoring of anomalous hydrogen evolution from anodically-polarized magnesium-based materials, this paper presents the application of the three-step (off-on-off) anodization operation sequence for amperometric scanning electrochemical microscopy (SECM) recently by our group to the characterization of 99.9% magnesium in aqueous saline solution. The SECM measurements done above prepolarized and nonpolarized magnesium provided new information on the hydrogen evolution reaction (HER) on this metal, whereas other experiments are presented that enable to monitor the effect of the oxy-hydroxide layer formed on the metal under anodic polarization. In addition, direct comparison of the data obtained for 99.9% magnesium with those previously obtained for AZ63 magnesium alloy contributed to separate the effect of noble impurities from the catalytic effect of the oxy-hydroxide layer formed on magnesium for the hydrogen-evolution reaction
LK http://riull.ull.es/xmlui/handle/915/25211
UL http://riull.ull.es/xmlui/handle/915/25211
LA en
DS Repositorio institucional de la Universidad de La Laguna
RD 18-nov-2024