Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/92763
Type: Artigo de evento
Title: Magnetic And Structural Properties Of Ion Nitrided Stainless Steel
Author: Basso R.L.O.
Pimentel V.L.
Weber S.
Marcos G.
Czerwiec T.
Baumvol I.J.R.
Figueroa C.A.
Abstract: The 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. © 2009 American Institute of Physics.
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Rights: aberto
Identifier DOI: 10.1063/1.3153945
Address: http://www.scopus.com/inward/record.url?eid=2-s2.0-67650257814&partnerID=40&md5=fe8171ac509810c4a5bd3e49aca7a56d
Date Issue: 2009
Appears in Collections:Unicamp - Artigos e Outros Documentos

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