Mechanisms to inhibit corrosion of Al alloys by polymeric conversion coatings

Paloumpa, I; Yfantis, A; Hoffmann, P; Burkov, Y; Yfantis, D; Schmeisser, D

dc.contributor.author	Paloumpa, I	en
dc.contributor.author	Yfantis, A	en
dc.contributor.author	Hoffmann, P	en
dc.contributor.author	Burkov, Y	en
dc.contributor.author	Yfantis, D	en
dc.contributor.author	Schmeisser, D	en
dc.date.accessioned	2014-03-01T01:21:02Z
dc.date.available	2014-03-01T01:21:02Z
dc.date.issued	2004	en
dc.identifier.issn	0257-8972	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/16044
dc.subject	Aluminium	en
dc.subject	Corrosion	en
dc.subject	Fluorotitanates	en
dc.subject	Fluorozirconates	en
dc.subject	Polypyrrole	en
dc.subject.classification	Materials Science, Coatings & Films	en
dc.subject.classification	Physics, Applied	en
dc.subject.other	Aluminum corrosion	en
dc.subject.other	Chemisorption	en
dc.subject.other	Energy dispersive spectroscopy	en
dc.subject.other	Photoelectron spectroscopy	en
dc.subject.other	Plastic coatings	en
dc.subject.other	Polypyrroles	en
dc.subject.other	Scanning electron microscopy	en
dc.subject.other	Acid neutralization	en
dc.subject.other	Aluminum alloys	en
dc.subject.other	coating	en
dc.subject.other	corrosion inhibitor	en
dc.subject.other	corrosion resistance	en
dc.subject.other	testing	en
dc.subject.other	zinc oxide	en
dc.title	Mechanisms to inhibit corrosion of Al alloys by polymeric conversion coatings	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.surfcoat.2003.10.076	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.surfcoat.2003.10.076	en
heal.language	English	en
heal.publicationDate	2004	en
heal.abstract	We introduce a recently developed novel polypyrrole-based coating, which can be formed on the aluminium surface from an aqueous pyrrole solution of fluorozirconic and fluorotitanic acid neutralised with zinc oxide. The composite layer consists of polypyrrole (Ppy) chemisorbed on titanium and zinc oxides and exhibits advanced corrosion resistance. For the investigation of the structure and the corrosion mechanism of the composite corrosion resistant layer we use a photo-electron emission microscope (PEEM). PEEM is especially suitable because it can deliver topographic contrast as well as elemental contrast and chemical information in connection with a variable X-ray source. Additionally, in order to investigate further the corrosion mechanism, but also the role of the alloy in the corrosion process, we examine the aluminium samples with SEM/EDX. The structure of the corrosion resistant layer was investigated before and after accelerated corrosion tests. Our results pointed out the important role of titanium oxide and zinc in the corrosion resistance of our Ppy coating on aluminium. (C) 2003 Elsevier B.V. All rights reserved.	en
heal.publisher	ELSEVIER SCIENCE SA	en
heal.journalName	Surface and Coatings Technology	en
dc.identifier.doi	10.1016/j.surfcoat.2003.10.076	en
dc.identifier.isi	ISI:000220889900056	en
dc.identifier.volume	180-181	en
dc.identifier.spage	308	en
dc.identifier.epage	312	en