RT info:eu-repo/semantics/article
T1 Evaluation of the corrosion protection of steel by anodic processing in metasilicate solution using the scanning vibrating electrode technique
A1 Izquierdo Pérez, Javier
A1 Fernández-Pérez, Bibliana María
A1 Martín-Ruíz, L.
A1 Mena, Víctor
A1 Rodríguez Raposo, Raquel
A1 Santana, Juan José
K1 corrosion protection
K1 steel
K1 metasilicate ions
K1 surface modification
K1 anodic treatment
K1 scanning vibrating electrode technique
AB Anodic processing in metasilicate solution was investigated for the improvement of the corrosion resistance of various steels, namely F111 low alloy carbon and 304 stainless steels, as well as on galvanized steel cut edges. The efficiency of the prior electrochemical treatment for each material was tested during their exposure to naturally-aerated aqueous chloride solutions of different aggressiveness. Analysis was performed using the scanning vibrating electrode technique (SVET) in order to detect local ionic current distributions over the samples under study associated to the corrosion reactions. The onset of corrosion processes were greatly inhibited after anodic processing with metasilicate on both the low alloy carbon steel and the galvanized steel cut edge. Conversely, SVET analysis of unbiased 304 steel samples tested in 0.1 M chloride-containing solution did not show differences between pristine and metasilicate-treated surfaces. Differences in the electrochemical reactivity between treated and non-treated 304 steel surfaces were only observed after partial removal of the corresponding passive layers under operator-controlled polarization.
YR 2015
FD 2015
LK http://riull.ull.es/xmlui/handle/915/19061
UL http://riull.ull.es/xmlui/handle/915/19061
LA en
DS Repositorio institucional de la Universidad de La Laguna
RD 06-may-2024