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dc.contributor.author
de Las Heras, Maria Evangelina
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dc.contributor.author
Ybarra, Gabriel Omar
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dc.contributor.author
Lamas, Diego Germán
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dc.contributor.author
Cabo, Amado
dc.contributor.author
Dalibon, Eugenia Laura
dc.contributor.author
Brühl, Sonia Patricia
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dc.date.available
2019-10-17T20:49:06Z
dc.date.issued
2017-03
dc.identifier.citation
de Las Heras, Maria Evangelina; Ybarra, Gabriel Omar; Lamas, Diego Germán; Cabo, Amado; Dalibon, Eugenia Laura; et al.; Plasma nitriding of 316L stainless steel in two different N2-H2 atmospheres - Influence on microstructure and corrosion resistance; Elsevier Science Sa; Surface and Coatings Technology; 313; 3-2017; 47-54
dc.identifier.issn
0257-8972
dc.identifier.uri
http://hdl.handle.net/11336/86213
dc.description.abstract
Plasma nitriding of austenitic stainless steel is of high technological importance due to its ability to improve the surface hardness, wear and corrosion resistance. Therefore, such process presents a significant potential as a treatment of materials for biomedical applications. The resulting properties obtained on the nitrided layer depend on the nitriding parameters used, such as temperature, gases partial pressures, process time, among others. In this work, austenitic stainless steel AISI 316L was nitrided in a DC plasma using two different N2-H2 atmospheres: 25% N2 and 20% N2. A detailed analysis of surface microstructure has been carried out and related to corrosion behaviour in two saline solutions. The results were compared with the 316L unnitrided (UN). The chemical composition of the nitrided layer was determined by GDOES. The phases present in the nitrided layer were analysed by X-ray diffraction (XRD) and the phases in the surface of nitrided layer were analysed by grazing incidence X-ray diffraction mode (GIXRD). The corrosion behaviour of the samples was studied by an electrochemical corrosion test in 3 wt% NaCl and Ringer's solutions. The GDOES (Glow Discharge Optical Emission Spectroscopy) analysis shows a higher N concentration of in the surface of 25% N2 samples, named HN. The phases observed, by GIXRD, in HN samples were expanded austenite γN, CrN, Fe3N and Fe4N and, in the 20% N2 samples, named LN, only peaks of expanded austenite and Fe4N were observed. The corrosion results showed that LN present better corrosion resistance than HN, this could be due to the absence of chromium nitrides in the surface of LN as a consequence of lower N percentage in the nitriding atmosphere.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Science Sa
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
AISI 316L
dc.subject
CORROSION RESISTANCE
dc.subject
ION NITRIDING
dc.subject.classification
Físico-Química, Ciencia de los Polímeros, Electroquímica
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dc.subject.classification
Ciencias Químicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Plasma nitriding of 316L stainless steel in two different N2-H2 atmospheres - Influence on microstructure and corrosion resistance
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2019-10-15T13:23:01Z
dc.journal.volume
313
dc.journal.pagination
47-54
dc.journal.pais
Países Bajos
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dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: de Las Heras, Maria Evangelina. Comisión Nacional de Energía Atómica. Centro Atómico Constituyentes; Argentina
dc.description.fil
Fil: Ybarra, Gabriel Omar. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Instituto Nacional de Tecnología Industrial; Argentina
dc.description.fil
Fil: Lamas, Diego Germán. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de San Martín. Escuela de Ciencia y Tecnología; Argentina
dc.description.fil
Fil: Cabo, Amado. IONAR S.A.; Argentina
dc.description.fil
Fil: Dalibon, Eugenia Laura. Universidad Tecnológica Nacional; Argentina
dc.description.fil
Fil: Brühl, Sonia Patricia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Tecnológica Nacional; Argentina
dc.journal.title
Surface and Coatings Technology
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.surfcoat.2017.01.037
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0257897217300361
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