Assessment of duplex coating combining plasma electrolytic oxidation and polymer layer on AZ31 magnesium alloy

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dc.contributor.authorArrabal Durán, Raúl
dc.contributor.authorJ.M. Mota
dc.contributor.authorCriado Portal, Antonio José
dc.contributor.authorPardo Gutiérrez Del Cid, Ángel
dc.contributor.authorMohedano Sánchez, Marta
dc.date.accessioned2026-01-19T11:18:34Z
dc.date.available2026-01-19T11:18:34Z
dc.date.issued2012
dc.description.abstractMechanical and corrosion tests were performed on a polymer-coated AZ31 magnesium alloy pre-treated by plasma electrolytic oxidation (PEO). Results were compared with a fluorotitanate–zirconate conversion coating pre-treatment. Mechanical performance was assessed by standardized adhesion (ISO 2409:2007), impact (ISO 6272‐1:2004) and impact+ adhesion (ISO 6272/ASTMD2794) pass/fail tests. Corrosion behavior was monitored using electrochemical impedance spectroscopy (EIS), ac/dc/ac measurements and continuous exposure to salt fog per ASTM B117 and cyclic exposure per VDA 621‐415 (VDA). The PEO+polymer coating revealed lower impact resistance but better corrosion resistance than the Ti/Zr+polymer coating. The ac/dc/ac procedure demonstrated to be faster than EIS measurements for evaluation of the corrosion performance of studied coatings.
dc.description.departmentDepto. de Ingeniería Química y de Materiales
dc.description.facultyFac. de Ciencias Químicas
dc.description.refereedTRUE
dc.description.sponsorshipDECOTEC S.L.
dc.description.statuspub
dc.identifier.doi10.1016/j.surfcoat.2012.05.091
dc.identifier.urihttps://hdl.handle.net/20.500.14352/130546
dc.journal.titleSurface and Coatings Technology
dc.language.isoeng
dc.page.final4703
dc.page.initial4692
dc.publisherElsevier
dc.relation.projectIDMAT 2009- 09845-C02-01
dc.relation.projectIDRYC-2008- 02038
dc.relation.projectIDRYC-2010-06749
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internationalen
dc.rights.accessRightsopen access
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subject.cdu66.0
dc.subject.keywordMagnesium
dc.subject.keywordPlasma electrolytic oxidation
dc.subject.keywordCorrosion
dc.subject.keywordPolymer coating
dc.subject.keywordImpact
dc.subject.keywordac/dc/ac
dc.subject.ucmMateriales
dc.subject.unesco33 Ciencias Tecnológicas
dc.titleAssessment of duplex coating combining plasma electrolytic oxidation and polymer layer on AZ31 magnesium alloy
dc.typejournal article
dc.volume.number206
dspace.entity.typePublication
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relation.isAuthorOfPublication184d0ea3-0ca2-459a-a9a4-86c8ad455bf3
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relation.isAuthorOfPublication160ef5bd-2d04-4f6c-b028-cb7ce4cf8d38
relation.isAuthorOfPublication.latestForDiscovery6a953ac5-3b84-40fc-a995-2a00ac938151

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