Evaluation of the anticorrosive behaviour of organic coatings by using a variant of electrochemical impedance spectroscopy

Kouloumbi, NJ; Kyvelidis, ST

dc.contributor.author	Kouloumbi, NJ	en
dc.contributor.author	Kyvelidis, ST	en
dc.date.accessioned	2014-03-01T02:41:52Z
dc.date.available	2014-03-01T02:41:52Z
dc.date.issued	2001	en
dc.identifier.issn	0026-3672	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/30644
dc.subject	Anticorrosive behaviour	en
dc.subject	Electrochemical impedance spectroscopy	en
dc.subject	Organic coatings	en
dc.subject.classification	Chemistry, Analytical	en
dc.subject.other	epoxide	en
dc.subject.other	organic compound	en
dc.subject.other	steel	en
dc.subject.other	conference paper	en
dc.subject.other	corrosion	en
dc.subject.other	diffusion coefficient	en
dc.subject.other	electrochemistry	en
dc.subject.other	exposure	en
dc.subject.other	impedance	en
dc.subject.other	methodology	en
dc.subject.other	molecular dynamics	en
dc.subject.other	spectroscopy	en
dc.subject.other	standard	en
dc.subject.other	water permeability	en
dc.title	Evaluation of the anticorrosive behaviour of organic coatings by using a variant of electrochemical impedance spectroscopy	en
heal.type	conferenceItem	en
heal.identifier.primary	10.1007/s006040170050	en
heal.identifier.secondary	http://dx.doi.org/10.1007/s006040170050	en
heal.language	English	en
heal.publicationDate	2001	en
heal.abstract	Electrochemical impedance spectroscopy (EIS) has been acknowledged as a modem and efficient method in the evaluation of the anticorrosive behaviour of coatings. However, difficulties in the interpretation of the complex experimental data present a significant drawback in the use of the method in field studies where quick results are required. The breakpoint frequency method is an extension of the basic EIS method, which allows rapid qualitative assessment of the condition of a coating. By the breakpoint frequency method, the behaviour of epoxy coatings containing various types of reinforcement and applied on steel specimens has been examined after long-term (up to 300 days) exposure to a corrosive environment. The parameter values obtained by the breakpoint frequency method, such as the delaminated area, have been compared with those obtained from fitting the experimental EIS data to a suitable equivalent circuit. These results have also been compared with those of the water permeability of free membranes and the diffusion coefficient determined by standard test methods (e.g. the cup test).	en
heal.publisher	SPRINGER-VERLAG WIEN	en
heal.journalName	Mikrochimica Acta	en
dc.identifier.doi	10.1007/s006040170050	en
dc.identifier.isi	ISI:000169798600014	en
dc.identifier.volume	136	en
dc.identifier.issue	3-4	en
dc.identifier.spage	175	en
dc.identifier.epage	180	en