Plasma nitriding of the inner surface of stainless steel tubes

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dc.contributor.authorBraceras, Iñigo
dc.contributor.authorIbáñez, Iñigo
dc.contributor.authorDominguez-Meister, Santiago
dc.contributor.authorSánchez-García, Jose Angel
dc.contributor.authorBrizuela, Marta
dc.contributor.authorLarrañaga, Aitor
dc.contributor.authorGarmendia, Iñaki
dc.contributor.institutionTecnalia Research & Innovation
dc.contributor.institutionINGENIERÍA DE SUPERFICIES
dc.date.issued2018-12-15
dc.descriptionPublisher Copyright: © 2018 Elsevier B.V.
dc.description.abstractStainless steels, especially the austenitic grades, present a good corrosion resistance but poor mechanical properties. Nitriding can increase the surface hardness but typically at the expense of corrosion resistance. Besides, nitriding of inner surfaces is not straight forward, as control of the plasma there is challenging. This work has focused on the development of active screen plasma nitriding processes of inner geometries of the widely used AISI 316L austenitic stainless steel, with preservation of the corrosion resistance. The structure and composition of the nitrided surfaces were studied and corrosion resistance of the inner surfaces assessed. As a result of the study, a relation has been established between plasma treatment parameters, geometrical features and the corrosion resistance. Additionally, electro-tribological studies have been performed. It has been observed that wear resistance improved and that ECR (Electrical Contact Resistance) is a good indicator of the wear phenomena occurring along the test and potentially could be a useful and simple monitoring tool of the status of the surface and assist in defining safe and dependable operational lives. As part of the study, an equivalent electric circuit is proposed. In conclusion, treatment conditions for AISI316L inner tube surfaces have been defined, with corrosion resistance preservation and improved tribological performance, while ECR monitoring has been found insightful and informative of the evolution of the later.en
dc.description.statusPeer reviewed
dc.format.extent7
dc.format.extent1247184
dc.identifier.citationBraceras , I , Ibáñez , I , Dominguez-Meister , S , Sánchez-García , J A , Brizuela , M , Larrañaga , A & Garmendia , I 2018 , ' Plasma nitriding of the inner surface of stainless steel tubes ' , Surface and Coatings Technology , vol. 355 , pp. 116-122 . https://doi.org/10.1016/j.surfcoat.2018.04.057
dc.identifier.doi10.1016/j.surfcoat.2018.04.057
dc.identifier.issn0257-8972
dc.identifier.otherresearchoutputwizard: 11556/579
dc.identifier.urlhttp://www.scopus.com/inward/record.url?scp=85046162110&partnerID=8YFLogxK
dc.language.isoeng
dc.relation.ispartofSurface and Coatings Technology
dc.rightsinfo:eu-repo/semantics/restrictedAccess
dc.subject.keywordsActive screen plasma nitriding
dc.subject.keywordsStainless steel
dc.subject.keywordsTubes
dc.subject.keywordsInner surface
dc.subject.keywordsHollow cathode
dc.subject.keywordsActive screen plasma nitriding
dc.subject.keywordsStainless steel
dc.subject.keywordsTubes
dc.subject.keywordsInner surface
dc.subject.keywordsHollow cathode
dc.subject.keywordsGeneral Chemistry
dc.subject.keywordsCondensed Matter Physics
dc.subject.keywordsSurfaces and Interfaces
dc.subject.keywordsSurfaces, Coatings and Films
dc.subject.keywordsMaterials Chemistry
dc.titlePlasma nitriding of the inner surface of stainless steel tubesen
dc.typejournal article
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