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dc.contributor.authorVenkatraman, Murali Sankar
dc.contributor.authorCole, Ivan S
dc.contributor.authorEmmanuel, Bosco
dc.date.accessioned2017-11-23T03:41:25Z
dc.date.available2017-11-23T03:41:25Z
dc.date.issued2011
dc.identifier.issn0013-4686
dc.identifier.doi10.1016/j.electacta.2011.06.020
dc.identifier.urihttp://hdl.handle.net/10072/173780
dc.description.abstractA one-dimensional mathematical model for the corrosion of a metal surface under a porous layer (often an oxide layer) is presented using porous electrode theory. The model allows one to predict the rates of corrosion in a metallic system where oxygen reduction is the only cathodic reaction which occurs on the surfaces of both the metal and the porous oxide layer albeit at different rates. Thus the model simulates the scenario where the porous layer residing on the metal surface competes with or complements the oxygen reduction reaction happening on the metal surface. The study finds that a large thickness, low porosity, low oxide electrical conductivity, poor oxygen reduction on the porous layer, and high specific contact resistivity of the metal–oxide lead to poor spatial separation of the anodic and cathodic reactions and hence encourage self-repair. In particular the metal–oxide contact potential and the oxygen reduction rates on the oxide surface are shown to have profound implications for self-repair strategies for corrosion mitigation.
dc.description.peerreviewedYes
dc.languageEnglish
dc.language.isoeng
dc.publisherElsevier
dc.relation.ispartofpagefrom8192
dc.relation.ispartofpageto8203
dc.relation.ispartofissue24
dc.relation.ispartofjournalElectrochimica Acta
dc.relation.ispartofvolume56
dc.subject.fieldofresearchMaterials Engineering not elsewhere classified
dc.subject.fieldofresearchPhysical Sciences
dc.subject.fieldofresearchChemical Sciences
dc.subject.fieldofresearchEngineering
dc.subject.fieldofresearchcode091299
dc.subject.fieldofresearchcode02
dc.subject.fieldofresearchcode03
dc.subject.fieldofresearchcode09
dc.titleCorrosion under a porous layer: A porous electrode model and its implications for self-repair
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
gro.hasfulltextNo Full Text
gro.griffith.authorCole, Ivan


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