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dc.contributor.authorSenanu, Samuel
dc.contributor.authorWang, Zhaohui
dc.contributor.authorRatvik, Arne Petter
dc.contributor.authorGrande, Tor
dc.date.accessioned2020-11-24T08:17:02Z
dc.date.available2020-11-24T08:17:02Z
dc.date.created2019-10-31T11:30:33Z
dc.date.issued2019
dc.identifier.citationJOM: The Member Journal of TMS. 2019, 72 (1), 210-217.en_US
dc.identifier.issn1047-4838
dc.identifier.urihttps://hdl.handle.net/11250/2689208
dc.description.abstractAutopsies of six spent potlinings with different carbon cathode block grades, amperage regimes and cell designs were conducted at three separate smelters to reveal possible mechanisms causing cathode wear. The microstructure of the cathode samples from the autopsies was investigated by optical and electron microscopy and x-ray computed tomography, while the composition of the solid bath at the surface and in the interior pores was investigated by x-ray diffraction and electron microscopy. The present findings revealed that the cathode surface was characterized by a wear pattern resembling pitting corrosion, and it is discussed that the observed variations in the bath chemistry play a major role in the wear mechanism and the pitting of the surface. A hypothesis involving initiation and termination of the main reaction causing the cathode wear is proposed based on the effect of the consumption of aluminium fluoride in the molten bath layer between the carbon and the molten aluminium pad, resulting in partial solidification of the bath and spatial variation of the current density.en_US
dc.language.isoengen_US
dc.publisherSpringeren_US
dc.subjectparticle detachmenten_US
dc.subjectcurrent densityen_US
dc.subjectpittingen_US
dc.subjectgraphitic cathodeen_US
dc.subjectcathode wearen_US
dc.titleCarbon Cathode Wear in Aluminium Electrolysis Cellsen_US
dc.typePeer revieweden_US
dc.typeJournal articleen_US
dc.description.versionacceptedVersionen_US
dc.rights.holderThis is a post-peer-review, pre-copyedit version of an article. The final authenticated version is available online at: https://doi.org/10.1007/s11837-019-03717-zen_US
dc.source.pagenumber210-217en_US
dc.source.volume72en_US
dc.source.journalJOM: The Member Journal of TMSen_US
dc.source.issue1en_US
dc.identifier.doi10.1007/s11837-019-03717-z
dc.identifier.cristin1742773
dc.relation.projectNorges forskningsråd: 236665en_US
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.fulltextpostprint
cristin.qualitycode1


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