Investigation of effect of electrode polarity on electrochemistry and magnetohydrodynamics using tertiary current distribution in electroslag remelting process

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dc.contributor.authorKarimi-Sibaki, Ebrahimcs
dc.contributor.authorKharicha, Abdellahcs
dc.contributor.authorVakhrushev, Dmitriics
dc.contributor.authorWu, Menghuaics
dc.contributor.authorLudwig, Andreascs
dc.contributor.authorBoháček, Jancs
dc.coverage.issue12cs
dc.coverage.volume28cs
dc.date.issued2021-12-06cs
dc.description.abstractTransport phenomena including the electromagnetic, concentration of ions, flow, and thermal fields in the electroslag remelting (ESR) process made of slag, electrode, air, mold, and melt pool are computed considering tertiary current distribution. Nernst-Planck equations are solved in the bulk of slag, and faradaic reactions are regarded at the metal-slag interface. Aiming at exploring electrochemical effects on the behavior of the ESR process, the calculated field structures are compared with those obtained using the classical ohmic approach, namely, primary current distribution whereby variations in concentrations of ions and faradaic reactions are ignored. Also, the influence of the earth magnetic field on magnetohydrodynamics in the melt pool and slag is considered. The impact of the polarity of electrode, whether positive, also known as direct current reverse polarity (DCRP), or negative, as known as direct current straight polarity (DCSP), on the transport of oxygen to the ingot of ESR is investigated. The obtained modeling results enabled us to explain the experimental observation of higher oxygen content in DCSP than that of DCRP operated ESR process.en
dc.formattextcs
dc.format.extent1551-1561cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationJOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL. 2021, vol. 28, issue 12, p. 1551-1561.en
dc.identifier.doi10.1007/s42243-021-00686-zcs
dc.identifier.issn1006-706Xcs
dc.identifier.orcid0000-0003-3319-4254cs
dc.identifier.other176904cs
dc.identifier.researcheridC-2078-2018cs
dc.identifier.scopus55213548700cs
dc.identifier.urihttp://hdl.handle.net/11012/204008
dc.language.isoencs
dc.publisherSpringercs
dc.relation.ispartofJOURNAL OF IRON AND STEEL RESEARCH INTERNATIONALcs
dc.relation.urihttps://link.springer.com/article/10.1007/s42243-021-00686-zcs
dc.rightsCreative Commons Attribution 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/1006-706X/cs
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/cs
dc.subjectElectroslag remeltingen
dc.subjectElectrochemistryen
dc.subjectCalcium fluorideen
dc.subjectCalcium oxideen
dc.subjectIon transporten
dc.subjectElectro-migrationen
dc.titleInvestigation of effect of electrode polarity on electrochemistry and magnetohydrodynamics using tertiary current distribution in electroslag remelting processen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-176904en
sync.item.dbtypeVAVen
sync.item.insts2025.02.03 15:47:25en
sync.item.modts2025.01.17 16:43:30en
thesis.grantorVysoké učení technické v Brně. Fakulta strojního inženýrství. Laboratoř přenosu tepla a prouděnícs
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