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Ionic Liquids as Extreme Pressure Additives for Bearing Steel Applications

2024-09Artigo científico Acesso aberto
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dc.contributor.authorDonato, Mariana T.
dc.contributor.authorNautiyal, Pranjal
dc.contributor.authorDeuermeier, Jonas
dc.contributor.authorBranco, Luís C.
dc.contributor.authorSaramago, Benilde
dc.contributor.authorColaço, Rogério
dc.contributor.authorCarpick, Robert W.
dc.contributor.institutionDQ - Departamento de Química
dc.contributor.institutionFaculdade de Ciências e Tecnologia (FCT)
dc.contributor.institutionLAQV@REQUIMTE
dc.contributor.institutionCENIMAT-i3N - Centro de Investigação de Materiais (Lab. Associado I3N)
dc.contributor.institutionUNINOVA-Instituto de Desenvolvimento de Novas Tecnologias
dc.contributor.institutionDCM - Departamento de Ciência dos Materiais
dc.contributor.pblSpringer
dc.date.accessioned2025-03-08T21:09:57Z
dc.date.available2025-03-08T21:09:57Z
dc.date.issued2024-09
dc.descriptionRWC and PN acknowledge support from the US Department of Energy under grant number DE-EE0010211. Publisher Copyright: © The Author(s) 2024.
dc.description.abstractThe protection of steel surfaces from wear under extreme pressure conditions is of major importance in several industries as it provides better performance and longer life of machinery. The motivation for this work was to study the lubrication of steel by ionic liquids (ILs), which have recently emerged as greener alternatives to commercial lubricants and additives. Three ILs based on sulfur-containing anions, used as 2-wt% additives in polyethylene glycol base oil (MW 200; PEG 200), were tested in the lubrication of ASTM 52100 bearing steel contacts in extreme pressure conditions (under mixed lubrication with a Hertzian pressure of 1.12 GPa) using a mini traction machine (MTM). Due to the poor resistance to corrosion of bearing steel, a semi-ester of succinic acid derivative corrosion inhibitor (Lanxess RC 4801) was added to the mixtures at a 1 wt% concentration. The ILs 1-hexyl-methylimidazolium trifluoromethanesulfonate ([C6mim][TfO]) and 1-hexyl-4-picolinium trifluoromethanesulfonate ([C6-4-pic][TfO]) revealed promising results in terms of surface protection of bearing steel. In contrast, 4-picolinium hydrogen sulfate ([4-picH][HSO4]) as 2-wt% additive to PEG 200 + 1% RC 4801 did not show any improvement in wear performance compared to neat PEG 200 + 1% RC 4801. PEG 200 + 2% [C6mim][TfO] + 1%RC 4801 allowed for a decrease in wear up to ~ 76% and PEG 200 + 2% [C6-4-pic][TfO] + 1%RC 4801 up to ~ 46% when compared with neat PEG 200 + 1% RC 4801. Optical microscopy images suggest the formation of an adsorbed layer, which was further supported by chemical analysis via x-ray photoelectron spectroscopy (XPS) data for [C6mim][TfO]. Graphical abstract: (Figure presented.)en
dc.description.versionpublishersversion
dc.description.versionpublished
dc.format.extent1592588
dc.identifier.doi10.1007/s11249-024-01898-6
dc.identifier.issn1023-8883
dc.identifier.otherPURE: 107504531
dc.identifier.otherPURE UUID: 1faea0e4-7901-4070-bdb1-a1b7f6f52e99
dc.identifier.otherScopus: 85200248803
dc.identifier.otherWOS: 001283379500001
dc.identifier.urihttp://hdl.handle.net/10362/180328
dc.identifier.urlhttps://www.scopus.com/pages/publications/85200248803
dc.language.isoeng
dc.peerreviewedyes
dc.relationFunding Information: info:eu-repo/grantAgreement/FCT/Concurso de avaliação no âmbito do Programa Plurianual de Financiamento de Unidades de I&D (2017%2F2018) - Financiamento Base/UIDB%2F00100%2F2020/PT
dc.relationinfo:eu-repo/grantAgreement/FCT/Concurso de avaliação no âmbito do Programa Plurianual de Financiamento de Unidades de I&D (2017%2F2018) - Financiamento Programático/UIDP%2F00100%2F2020/PT
dc.relationinfo:eu-repo/grantAgreement/FCT/Concurso para Atribuição do Estatuto e Financiamento de Laboratórios Associados (LA)/LA%2FP%2F0056%2F2020/PT
dc.relationinfo:eu-repo/grantAgreement/FCT//SFRH%2FBD%2F140079%2F2018/PT
dc.relationinfo:eu-repo/grantAgreement/FCT/Concurso de avaliação no âmbito do Programa Plurianual de Financiamento de Unidades de I&D (2017%2F2018) - Financiamento Base/UIDB%2F50022%2F2020/PT
dc.relationinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/LA%2FP%2F0037%2F2020/PT
dc.relationInstitute of Nanostructures, Nanomodelling and Nanofabrication
dc.relationInstitute of Nanostructures, Nanomodelling and Nanofabrication
dc.relationinfo:eu-repo/grantAgreement/FCT/Concurso de avaliação no âmbito do Programa Plurianual de Financiamento de Unidades de I&D (2017%2F2018) - Financiamento Base/UIDB%2F50025%2F2020/PT
dc.subjectFriction
dc.subjectIonic liquids
dc.subjectLubricant additives
dc.subjectSteel
dc.subjectWear
dc.subjectMechanics of Materials
dc.subjectMechanical Engineering
dc.subjectSurfaces and Interfaces
dc.subjectSurfaces, Coatings and Films
dc.titleIonic Liquids as Extreme Pressure Additives for Bearing Steel Applicationsen
dc.typejournal article
degois.publication.issue3
degois.publication.titleTribology Letters
degois.publication.volume72
dspace.entity.typePublication
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oaire.awardTitleInstitute of Nanostructures, Nanomodelling and Nanofabrication
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oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/LA%2FP%2F0037%2F2020/PT
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oaire.fundingStreamConcurso de avaliação no âmbito do Programa Plurianual de Financiamento de Unidades de I&D (2017/2018) - Financiamento Programático
oaire.fundingStreamConcurso para Atribuição do Estatuto e Financiamento de Laboratórios Associados (LA)
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oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStreamConcurso de avaliação no âmbito do Programa Plurianual de Financiamento de Unidades de I&D (2017/2018) - Financiamento Base
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