[en] This work aims at studying by electrochemical impedance spectroscopy (EIS) the susceptibility to filiform corrosion of low carbon steel covered by cataphoretic coating. The determination of the exposed metallic area variations of scratched samples during ageing test is an estimation of the disbonding of the coating and/or the filiform corrosion. This area can be evaluated by electrochemical impedance spectroscopy (EIS). A simplified electrical equivalent model used to estimate the exposed metallic area is valid if the corrosion products are correctly dissolved before characterization. Furthermore the steel is a very complex substrate and thus many parameters must be optimized in order to remove the corrosion products before EIS measurements.
Research center :
CRIM - Ingénierie des matériaux
Disciplines :
Mechanical engineering Education & instruction
Author, co-author :
Romano, Anne-Pascale ; Université de Mons > Unités externes > Materia Nova ASBL ; Université de Mons > Faculté Polytechnique > Science des Matériaux
Olivier, Marie-Georges ; Université de Mons > Faculté Polytechnique > Service de Science des Matériaux
Language :
English
Title :
Investigation by electrochemical impedance spectroscopy of filiform corrosion of electrocoated steel substrates
Publication date :
21 December 2015
Journal title :
Progress in Organic Coatings
ISSN :
0300-9440
Publisher :
Elsevier, Netherlands
Volume :
89
Pages :
1-7
Peer reviewed :
Peer Reviewed verified by ORBi
Research unit :
F502 - Science des Matériaux
Research institute :
R350 - Institut de recherche en sciences et technologies du langage