RT info:eu-repo/semantics/article
T1 New opportunities for the study of organic films applied on metals for corrosion protection by means of alternating current scanning electrochemical microscopy
A1 Souto, Ricardo Manuel
A1 Socas Rodríguez, Bárbara
A1 Izquierdo Pérez, Javier
A1 Santana, Juan José
A1 González, Sergio
K1 Corrosion inhibition
K1 alternating current scanning electrochemical microscopy
K1 copper
K1 benzotriazole
K1 mercaptobenzimidazole
K1 ethyl xanthate
AB A new method for the investigation of the inhibition efficiency against corrosion by organic films adsorbed on metals based on the measurement of Z-approach curves by AC-SECM is proposed. Preliminary measurements conducted on four copper-inhibitor systems exposed to aqueous solutions support that a characteristic frequency can be defined, which corresponds to the frequency of the AC potential signal applied to the SECM tip for which a transition between negative- and positive-feedback behaviours is observed in the approach curves. From the shift of this characteristic frequency towards higher values, the enhancement of the corrosion protection efficiency of the inhibitor system can be established. Furthermore, the effects of inhibitor nature, concentration, and pre-treatment duration for the formation of the surface films, can be readily investigated
YR 2012
FD 2012
LK http://riull.ull.es/xmlui/handle/915/19160
UL http://riull.ull.es/xmlui/handle/915/19160
LA en
DS Repositorio institucional de la Universidad de La Laguna
RD 02-may-2024