Influence of the Gas Pressure of Plasma Nitriding on the Structural, Mechanical and Tribological Surface Properties of AISI 316L
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1590/1980-5373-MR-2019-0302 http://hdl.handle.net/11449/185913 |
Resumo: | In this paper, the influence of gas nitriding (80% H-2-20% N-2) pressure (between 3 and 7 Torr) on the modification of surface properties of AISI 316L stainless steel is examined. The structural, mechanical, tribological and electrochemical properties of the layer produced in disk samples were studied. The samples' characteristics were determined by scanning electron microscopy, X-ray diffraction, electrochemical potential curves, microhardness, roughness and wear tests. When pressure increases, the microhardness, elasticity and thickness also increase. The maximum thickness of the nitrided layer was 6.4 mu m, the hardness reached 2200 HV0.0036 and the mass loss decreased until 1% relatively to the unnitrided sample. The X-ray diffractograms showed the presence of the expanded austenite in all the samples. The correlation between these diffractograms and the corrosion results corroborate to the most recent previous conclusions of our systematic study, which evince the interconnection between the improvement of the corrosion resistance and the presence of nitrides on the top of the nitrided layer. More significant presence of such nitrides was observed for the sample nitrided at 6 Torr, whose corrosion performance was better than for the other samples. This pressure seems to be the most indicated to improve the properties under study. Moreover, the results verified not only that the sample geometry is an important factor for enhancing these properties but also that the border effect, which causes the rings on the disk border, depends on the pressure, but not on temperature or time from the plasma nitriding process. |
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Influence of the Gas Pressure of Plasma Nitriding on the Structural, Mechanical and Tribological Surface Properties of AISI 316LAISI 316L stainless steelPlasma nitridingGas nitriding pressureTribological and Mechanical propertiesSynchrotron DiffractionIn this paper, the influence of gas nitriding (80% H-2-20% N-2) pressure (between 3 and 7 Torr) on the modification of surface properties of AISI 316L stainless steel is examined. The structural, mechanical, tribological and electrochemical properties of the layer produced in disk samples were studied. The samples' characteristics were determined by scanning electron microscopy, X-ray diffraction, electrochemical potential curves, microhardness, roughness and wear tests. When pressure increases, the microhardness, elasticity and thickness also increase. The maximum thickness of the nitrided layer was 6.4 mu m, the hardness reached 2200 HV0.0036 and the mass loss decreased until 1% relatively to the unnitrided sample. The X-ray diffractograms showed the presence of the expanded austenite in all the samples. The correlation between these diffractograms and the corrosion results corroborate to the most recent previous conclusions of our systematic study, which evince the interconnection between the improvement of the corrosion resistance and the presence of nitrides on the top of the nitrided layer. More significant presence of such nitrides was observed for the sample nitrided at 6 Torr, whose corrosion performance was better than for the other samples. This pressure seems to be the most indicated to improve the properties under study. Moreover, the results verified not only that the sample geometry is an important factor for enhancing these properties but also that the border effect, which causes the rings on the disk border, depends on the pressure, but not on temperature or time from the plasma nitriding process.Fundação de Amparo à Pesquisa do Estado de Minas Gerais (FAPEMIG)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)National Laboratory of Light Synchrotron (LNLS), BrazilUniv Estadual Paulista, UNESP, Fac Ciencias & Engn, Tupa, SP, BrazilUniv Fed Vales Jequitinhonha & Mucuri, Diamantina, MG, BrazilUA, Dept Engn Mecan, P-3810193 Aveiro, PortugalUniv Estadual Paulista, UNESP, Fac Ciencias & Engn, Tupa, SP, BrazilFAPEMIG: APQ-02127-14FAPEMIG: APQ-02345-14National Laboratory of Light Synchrotron (LNLS), Brazil: XDR1/9101National Laboratory of Light Synchrotron (LNLS), Brazil: XDR1/13458Univ Fed Sao Carlos, Dept Engenharia MaterialsUniversidade Estadual Paulista (Unesp)Universidade Federal de Viçosa (UFV)UACampos, Marcelo [UNESP]Souza, Solange deDavim, Joao PauloSouza, Sylvio Dionysio deOlzon-Dionysio, Maristela2019-10-04T12:39:38Z2019-10-04T12:39:38Z2019-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article10application/pdfhttp://dx.doi.org/10.1590/1980-5373-MR-2019-0302Materials Research-ibero-american Journal Of Materials. Sao Carlos: Univ Fed Sao Carlos, Dept Engenharia Materials, v. 22, n. 4, 10 p., 2019.1516-1439http://hdl.handle.net/11449/18591310.1590/1980-5373-MR-2019-0302S1516-14392019000400211WOS:000475856400001S1516-14392019000400211.pdf0717563036484228Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengMaterials Research-ibero-american Journal Of Materialsinfo:eu-repo/semantics/openAccess2023-10-18T06:10:33Zoai:repositorio.unesp.br:11449/185913Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462023-10-18T06:10:33Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Influence of the Gas Pressure of Plasma Nitriding on the Structural, Mechanical and Tribological Surface Properties of AISI 316L |
title |
Influence of the Gas Pressure of Plasma Nitriding on the Structural, Mechanical and Tribological Surface Properties of AISI 316L |
spellingShingle |
Influence of the Gas Pressure of Plasma Nitriding on the Structural, Mechanical and Tribological Surface Properties of AISI 316L Campos, Marcelo [UNESP] AISI 316L stainless steel Plasma nitriding Gas nitriding pressure Tribological and Mechanical properties Synchrotron Diffraction |
title_short |
Influence of the Gas Pressure of Plasma Nitriding on the Structural, Mechanical and Tribological Surface Properties of AISI 316L |
title_full |
Influence of the Gas Pressure of Plasma Nitriding on the Structural, Mechanical and Tribological Surface Properties of AISI 316L |
title_fullStr |
Influence of the Gas Pressure of Plasma Nitriding on the Structural, Mechanical and Tribological Surface Properties of AISI 316L |
title_full_unstemmed |
Influence of the Gas Pressure of Plasma Nitriding on the Structural, Mechanical and Tribological Surface Properties of AISI 316L |
title_sort |
Influence of the Gas Pressure of Plasma Nitriding on the Structural, Mechanical and Tribological Surface Properties of AISI 316L |
author |
Campos, Marcelo [UNESP] |
author_facet |
Campos, Marcelo [UNESP] Souza, Solange de Davim, Joao Paulo Souza, Sylvio Dionysio de Olzon-Dionysio, Maristela |
author_role |
author |
author2 |
Souza, Solange de Davim, Joao Paulo Souza, Sylvio Dionysio de Olzon-Dionysio, Maristela |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Universidade Federal de Viçosa (UFV) UA |
dc.contributor.author.fl_str_mv |
Campos, Marcelo [UNESP] Souza, Solange de Davim, Joao Paulo Souza, Sylvio Dionysio de Olzon-Dionysio, Maristela |
dc.subject.por.fl_str_mv |
AISI 316L stainless steel Plasma nitriding Gas nitriding pressure Tribological and Mechanical properties Synchrotron Diffraction |
topic |
AISI 316L stainless steel Plasma nitriding Gas nitriding pressure Tribological and Mechanical properties Synchrotron Diffraction |
description |
In this paper, the influence of gas nitriding (80% H-2-20% N-2) pressure (between 3 and 7 Torr) on the modification of surface properties of AISI 316L stainless steel is examined. The structural, mechanical, tribological and electrochemical properties of the layer produced in disk samples were studied. The samples' characteristics were determined by scanning electron microscopy, X-ray diffraction, electrochemical potential curves, microhardness, roughness and wear tests. When pressure increases, the microhardness, elasticity and thickness also increase. The maximum thickness of the nitrided layer was 6.4 mu m, the hardness reached 2200 HV0.0036 and the mass loss decreased until 1% relatively to the unnitrided sample. The X-ray diffractograms showed the presence of the expanded austenite in all the samples. The correlation between these diffractograms and the corrosion results corroborate to the most recent previous conclusions of our systematic study, which evince the interconnection between the improvement of the corrosion resistance and the presence of nitrides on the top of the nitrided layer. More significant presence of such nitrides was observed for the sample nitrided at 6 Torr, whose corrosion performance was better than for the other samples. This pressure seems to be the most indicated to improve the properties under study. Moreover, the results verified not only that the sample geometry is an important factor for enhancing these properties but also that the border effect, which causes the rings on the disk border, depends on the pressure, but not on temperature or time from the plasma nitriding process. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-10-04T12:39:38Z 2019-10-04T12:39:38Z 2019-01-01 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1590/1980-5373-MR-2019-0302 Materials Research-ibero-american Journal Of Materials. Sao Carlos: Univ Fed Sao Carlos, Dept Engenharia Materials, v. 22, n. 4, 10 p., 2019. 1516-1439 http://hdl.handle.net/11449/185913 10.1590/1980-5373-MR-2019-0302 S1516-14392019000400211 WOS:000475856400001 S1516-14392019000400211.pdf 0717563036484228 |
url |
http://dx.doi.org/10.1590/1980-5373-MR-2019-0302 http://hdl.handle.net/11449/185913 |
identifier_str_mv |
Materials Research-ibero-american Journal Of Materials. Sao Carlos: Univ Fed Sao Carlos, Dept Engenharia Materials, v. 22, n. 4, 10 p., 2019. 1516-1439 10.1590/1980-5373-MR-2019-0302 S1516-14392019000400211 WOS:000475856400001 S1516-14392019000400211.pdf 0717563036484228 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Materials Research-ibero-american Journal Of Materials |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
10 application/pdf |
dc.publisher.none.fl_str_mv |
Univ Fed Sao Carlos, Dept Engenharia Materials |
publisher.none.fl_str_mv |
Univ Fed Sao Carlos, Dept Engenharia Materials |
dc.source.none.fl_str_mv |
Web of Science reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
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1799964611937566720 |