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dc.contributor.authorBasso, Rodrigo Leonardo de Oliveirapt_BR
dc.contributor.authorPimentel, Vinicius do Lagopt_BR
dc.contributor.authorWeber, Sylvainpt_BR
dc.contributor.authorMarcos, Grégorypt_BR
dc.contributor.authorCzerwiec, Thierrypt_BR
dc.contributor.authorBaumvol, Israel Jacob Rabinpt_BR
dc.contributor.authorFigueroa, Carlos Alejandropt_BR
dc.date.accessioned2014-06-10T02:05:12Zpt_BR
dc.date.issued2009pt_BR
dc.identifier.issn0021-8979pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/96275pt_BR
dc.description.abstractThe magnetic properties and crystalline structure of expanded austenite obtained by ion beam nitriding of AISI 316 steel are investigated. Magnetic force microscopy reveals that the nitrogen expanded austenite has two different layers, an outermost ferromagnetic layer and a paramagnetic layer beneath it. Superimposing the nitrogen concentration profile determined by secondary neutral mass spectrometry and the magnetic force microscopy image, one can see that the paramagnetic-ferromagnetic transition takes place at the inflection point of the nitrogen concentration profile at about 14±2 N at. %. Conventional and glancing angle x-ray diffraction suggests that nitrogen could occupy first tetrahedral interstitial positions nitrogen-poor paramagnetic phase and then, after saturation of Cr traps, octahedral interstitial positions nitrogen-rich ferromagnetic phase . The ferromagnetic-paramagnetic transition is seen to be governed by Cr traps –N interactions.en
dc.format.mimetypeapplication/pdf
dc.language.isoengpt_BR
dc.relation.ispartofJournal of applied physics. Melville. Vol. 105, no. 12 (June 2009), 124914, 5 p.pt_BR
dc.rightsOpen Accessen
dc.subjectEstrutura cristalinapt_BR
dc.subjectAço inoxidável austeníticopt_BR
dc.subjectMateriais ferromagnéticospt_BR
dc.subjectDominios magneticospt_BR
dc.subjectEndurecimento de superfíciespt_BR
dc.subjectPropriedades magnéticaspt_BR
dc.subjectIntersticiaispt_BR
dc.titleMagnetic and structural properties of ion nitrided stainless steelpt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb000749140pt_BR
dc.type.originEstrangeiropt_BR


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