RT info:eu-repo/semantics/article
T1 New insights on the influence of aluminum on the anomalous hydrogen evolution of anodized magnesium using scanning electrochemical microscopy. 
D. Filotás, L. Nagy, G. Nagy, R.M. Souto.
A1 Souto, Ricardo Manuel
A1 Filotás, Dániel
A1 Nagy, Lívia
A1 Nagy, Géza
A2 Química
A2 Proyecto CTQ2018-80522-P
Grupo de Electroquímica y CorrosiónInstituto de Materiales y Nanotecnología
K1 corrosion
K1 magnesium
K1 anodic polarization
K1 anomalous hydrogen evolution
K1 scanning electrochemical microscopy
K1 model Mg-Al galvanic couple
AB Scanning electrochemical microscopy (SECM) in the sample generation-tip collection mode was employed to gain new insights on the effect of aluminum on the anomalous hydrogen evolution from anodically-polarized magnesium exposed to an aqueous saline solution. Various experiments were designed to investigate the processes occurring on a model Mg-Al galvanic pair in regards to the hydrogen evolution reaction occurring separately at the anodic and cathodic sites. The data obtained in this work do not support the so-called noble impurity theory for HER on anodically-polarized magnesium, whereas evidences were obtained that the dark oxy-hydroxide layer formed on this metal may exert a combined catalytic efficiency toward HER whereas imperfectly passivating the metal surface.
LK http://riull.ull.es/xmlui/handle/915/25212
UL http://riull.ull.es/xmlui/handle/915/25212
LA en
DS Repositorio institucional de la Universidad de La Laguna
RD 24-nov-2024