RT info:eu-repo/semantics/article T1 Examination of organic coatings on metallic substrates by scanning electrochemical microscopy in feedback mode: revealing the early stages of coating breakdown in corrosive environments A1 Souto, Ricardo Manuel A1 González-García, Yaiza A1 Izquierdo Pérez, Javier A1 González, Sergio K1 Scanning electrochemical microscopy K1 organic coatings degradation K1 blistering K1 polyurethane K1 mild steel AB Scanning electrochemical microscopy in feedback mode was used to monitor changes inthe surface state of a polymeric film applied on a metallic substrate when exposed to anaqueous electrolytic environment. The protected metal consisted of a carbon steelsubstrate coated with a polyurethane-based polymeric film. SECM measurementsperformed in the presence and absence of chloride anions permitted a specific effectcaused by Cl- anions at early exposures to be detected. Significant surface roughening isobserved for immersion times shorter than one day when the electrolyte contains chlorideions. Additionally, the growth of an individual blister could also be investigated YR 2010 FD 2010 LK http://riull.ull.es/xmlui/handle/915/19115 UL http://riull.ull.es/xmlui/handle/915/19115 LA en DS Repositorio institucional de la Universidad de La Laguna RD 22-nov-2024