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Please use this identifier to cite or link to this item: https://olympias.lib.uoi.gr/jspui/handle/123456789/13897
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dc.contributor.authorLekatou, A.en
dc.contributor.authorZois, D.en
dc.contributor.authorKarantzalis, A. E.en
dc.contributor.authorGrimanelis, D.en
dc.date.accessioned2015-11-24T17:33:48Z-
dc.date.available2015-11-24T17:33:48Z-
dc.identifier.issn0010-938X-
dc.identifier.urihttps://olympias.lib.uoi.gr/jspui/handle/123456789/13897-
dc.rightsDefault Licence-
dc.subjectcermet coatingsen
dc.subjectbond coaten
dc.subjectpolarizationen
dc.subjectpotentiostaticen
dc.subjectraman spectroscopyen
dc.subjectpseudopassivityen
dc.subjectthermally sprayed coatingsen
dc.subjectvelocity oxygen-fuelen
dc.subjectcobalt oxide-filmsen
dc.subjecttungsten-carbideen
dc.subjectcemented carbidesen
dc.subjectcarbon nanotubesen
dc.subjectresidual-stressen
dc.subjectaluminum-alloyen
dc.subjecthard chromiumen
dc.subjectstainless-steelsen
dc.titleElectrochemical behaviour of cermet coatings with a bond coat on Al7075: Pseudopassivity, localized corrosion and galvanic effect considerations in a saline environmenten
heal.typejournalArticle-
heal.type.enJournal articleen
heal.type.elΆρθρο Περιοδικούel
heal.identifier.primaryDOI 10.1016/j.corsci.2010.04.010-
heal.identifier.secondary<Go to ISI>://000279094800011-
heal.languageen-
heal.accesscampus-
heal.recordProviderΠανεπιστήμιο Ιωαννίνων. Σχολή Θετικών Επιστημών. Τμήμα Μηχανικών Επιστήμης Υλικώνel
heal.publicationDate2010-
heal.abstractThe behaviour of an HVOF WC-17Co/Ni-5Al coating on Al7075 in aqueous NaCl is investigated. The coating susceptibility to localized corrosion depended on the potential of polarization reversal. A two-stage pseudopassivity was observed for WC-17Co: At low overpotentials, oxidation occurred in the binder leading to surface films composed of anhydrous Co- and W-oxides. At high overpotentials, oxidation extended to the carbide phase leading to the formation of hydrated WO(3) films. Ni-5Al notably reduced the galvanic effect between WC-17Co and Al7075, whereas it hindered corrosion propagation into the substrate. The coating showed a high corrosion resistance during salt spraying for 49 days. (C) 2010 Elsevier Ltd. All rights reserved.en
heal.publisherPergamon - Elsevieren
heal.journalNameCorrosion Scienceen
heal.journalTypepeer reviewed-
heal.fullTextAvailabilityTRUE-
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