Static and dynamic phenomena during the electrodissolution of steel in aqueous NaCl solutions

Karantonis, A; Marcheva, Y; Ghivalos, LG; Kouloumbi, N

dc.contributor.author	Karantonis, A	en
dc.contributor.author	Marcheva, Y	en
dc.contributor.author	Ghivalos, LG	en
dc.contributor.author	Kouloumbi, N	en
dc.date.accessioned	2014-03-01T01:25:11Z
dc.date.available	2014-03-01T01:25:11Z
dc.date.issued	2006	en
dc.identifier.issn	1344-3542	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/17584
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-33750880656&partnerID=40&md5=5d45e9ad248b6ee6976f93ac506e7d03	en
dc.subject	Current oscillations	en
dc.subject	Impedance	en
dc.subject	Steel electrodissolution	en
dc.subject.classification	Electrochemistry	en
dc.subject.other	Anodic polarization	en
dc.subject.other	Dissolution	en
dc.subject.other	Electric impedance	en
dc.subject.other	Electrochemistry	en
dc.subject.other	Oscillations	en
dc.subject.other	Sodium chloride	en
dc.subject.other	Current oscillations	en
dc.subject.other	Faradaic resistance	en
dc.subject.other	Steel electrodissolution	en
dc.subject.other	Steel	en
dc.title	Static and dynamic phenomena during the electrodissolution of steel in aqueous NaCl solutions	en
heal.type	journalArticle	en
heal.language	English	en
heal.publicationDate	2006	en
heal.abstract	The static and dynamic characteristics of the electrodissolution of steel covered with an organic layer as well as of plain steel are studied in aqueous solutions of various NaCl concentrations. Anodic polarization and electrochemical impedance spectroscopy for plain steel indicate that active dissolution takes place in a potential region close to the open circuit potential where the current is less than 10(-4) A. Similar experiments for coated steel suggest the adsorption of ionic species and the formation of a surface layer on the metal substrate. This layer results in a negative faradaic resistance, i.e. a potential region where the faradaic current is a decreasing function of the potential. This region of negative faradaic resistance is related to the occurrence of current oscillations. These oscillations, of a period ranging from 100 to 1200 s, might be attributed to the formation/dissolution of a salt precipitant within the pores of the organic layer.	en
heal.publisher	ELECTROCHEMICAL SOC JAPAN	en
heal.journalName	Electrochemistry	en
dc.identifier.isi	ISI:000240484200003	en
dc.identifier.volume	74	en
dc.identifier.issue	9	en
dc.identifier.spage	744	en
dc.identifier.epage	751	en