Plasma nitriding plus oxidizing as a protective treatment for AISI 4140 steel

Autores
Dalibón Bähler, Eugenia Laura; Vergniaud, Pablo Martín; Karges, Esteban; Cabo, Amado; Brühl, Sonia Patricia
Año de publicación
2022
Idioma
inglés
Tipo de recurso
documento de conferencia
Estado
versión aceptada
Descripción
AISI 4140 is a typical chromium molybdenum medium alloy steel, widely used as construction steel for machine components. Plasma nitriding has been applied as surface hardening treatment with success but the nitrided layer isn ́t always good for corrosion. Plasma nitriding plus oxidizing is proposed as an environmentally friendly alternative which can assure a good wear resistance and also provide a corrosion protective surface layer. In this investigation, heat treated AISI 4140 steel was plasma nitrided in a 15 hours process at 500 C and then oxidized in the same chamber using two different temperatures: 400 C and 500 C, 1 hour duration in a water steam atmosphere. Microstructure was analysed by optical and electronic microscopy and XRD. Wear resistance was tested in a pin on disk machine using alumina as counterpart and corrosion resistance was evaluated in salt spray fog tests and electrochemical tests in NaCl solution, comparing with only nitrided samples of the same steel. The oxide layer was 0.5 microns width, and the nitrided compound layer beneath, 3 microns width. XRD revealed the presence of magnetite and in a minor proportion, hematite in the oxide layer, and gamma iron nitrides in the nitrided layer. In the pin on disk tests with 3 N load no significative variations occurred between the oxidized samples compared with the only nitrided ones, neither in volume loss nor in friction coefficient. On the other hand, in the salt spray fog tests, only the nitrided samples oxidized at 400 C did not present signs of general corrosion after 100 h test. In the electrochemical tests, both oxidized samples had a nobler corrosion potential and a pseudo passive region, showing a better corrosion behaviour of the oxidized samples compared to the nitrided ones, which suffered from active dissolution in the chloride solution.
Fil: Dalibón Bahler, Eugenia Laura. Universidad Tecnológica Nacional. Facultad Regional Concepción del Uruguay. Departamento Ingeniería Electromecánica. Grupo de Ingeniería de Superficies; Argentina.
Fil: Vergniaud, Pablo Martín. Universidad Tecnológica Nacional. Facultad Regional Concepción del Uruguay. Departamento Ingeniería Electromecánica. Grupo de Ingeniería de Superficies; Argentina.
Fil: Karges, Esteban. IONAR S.A.; Argentina.
Fil: Cabo, Amado. IONAR S.A.; Argentina.
Fil: Brühl, Sonia Patricia. Universidad Tecnológica Nacional. Facultad Regional Concepción del Uruguay. Departamento Ingeniería Electromecánica. Grupo de Ingeniería de Superficies; Argentina.
Fil: Brühl, Sonia Patricia. Consejo Nacional de Investigaciones Científicas y Técnicas.
Materia
Plasma nitriding
Duplex plasma treatment
AISI 4140 steel
Oxidized layer
Nivel de accesibilidad
acceso abierto
Condiciones de uso
2023-01-24T13:07:36Z
Repositorio
Repositorio Institucional Abierto (UTN)
Institución
Universidad Tecnológica Nacional
OAI Identificador
oai:ria.utn.edu.ar:20.500.12272/7481
Acceder
id RIAUTN_9447d1c38610f10137ce143ae6b44d10
oai_identifier_str oai:ria.utn.edu.ar:20.500.12272/7481
network_acronym_str RIAUTN
repository_id_str a
network_name_str Repositorio Institucional Abierto (UTN)
spelling Plasma nitriding plus oxidizing as a protective treatment for AISI 4140 steelDalibón Bähler, Eugenia LauraVergniaud, Pablo MartínKarges, EstebanCabo, AmadoBrühl, Sonia PatriciaPlasma nitridingDuplex plasma treatmentAISI 4140 steelOxidized layerAISI 4140 is a typical chromium molybdenum medium alloy steel, widely used as construction steel for machine components. Plasma nitriding has been applied as surface hardening treatment with success but the nitrided layer isn ́t always good for corrosion. Plasma nitriding plus oxidizing is proposed as an environmentally friendly alternative which can assure a good wear resistance and also provide a corrosion protective surface layer. In this investigation, heat treated AISI 4140 steel was plasma nitrided in a 15 hours process at 500 C and then oxidized in the same chamber using two different temperatures: 400 C and 500 C, 1 hour duration in a water steam atmosphere. Microstructure was analysed by optical and electronic microscopy and XRD. Wear resistance was tested in a pin on disk machine using alumina as counterpart and corrosion resistance was evaluated in salt spray fog tests and electrochemical tests in NaCl solution, comparing with only nitrided samples of the same steel. The oxide layer was 0.5 microns width, and the nitrided compound layer beneath, 3 microns width. XRD revealed the presence of magnetite and in a minor proportion, hematite in the oxide layer, and gamma iron nitrides in the nitrided layer. In the pin on disk tests with 3 N load no significative variations occurred between the oxidized samples compared with the only nitrided ones, neither in volume loss nor in friction coefficient. On the other hand, in the salt spray fog tests, only the nitrided samples oxidized at 400 C did not present signs of general corrosion after 100 h test. In the electrochemical tests, both oxidized samples had a nobler corrosion potential and a pseudo passive region, showing a better corrosion behaviour of the oxidized samples compared to the nitrided ones, which suffered from active dissolution in the chloride solution.Fil: Dalibón Bahler, Eugenia Laura. Universidad Tecnológica Nacional. Facultad Regional Concepción del Uruguay. Departamento Ingeniería Electromecánica. Grupo de Ingeniería de Superficies; Argentina.Fil: Vergniaud, Pablo Martín. Universidad Tecnológica Nacional. Facultad Regional Concepción del Uruguay. Departamento Ingeniería Electromecánica. Grupo de Ingeniería de Superficies; Argentina.Fil: Karges, Esteban. IONAR S.A.; Argentina.Fil: Cabo, Amado. IONAR S.A.; Argentina.Fil: Brühl, Sonia Patricia. Universidad Tecnológica Nacional. Facultad Regional Concepción del Uruguay. Departamento Ingeniería Electromecánica. Grupo de Ingeniería de Superficies; Argentina.Fil: Brühl, Sonia Patricia. Consejo Nacional de Investigaciones Científicas y Técnicas.2023-01-24T13:07:36Z2023-01-24T13:07:36Z2022-09-29info:eu-repo/semantics/conferenceObjectinfo:eu-repo/semantics/acceptedVersionhttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciapdfapplication/pdfapplication/pdfCongreso Internacional Materials Science and Engineering – MSE. Darmstadt, Alemania (2022).http://hdl.handle.net/20.500.12272/7481enginfo:eu-repo/semantics/openAccess2023-01-24T13:07:36Zhttp://creativecommons.org/licenses/by-nc-nd/4.0/Attribution-NonCommercial-NoDerivatives 4.0 InternacionalDalibón, Eugenia Laura ; Vergniaud, Pablo Martín ; Karges, Esteban ; Cabo, Amado ; Brühl, Sonia Patricia.No comercial con fines académicos.reponame:Repositorio Institucional Abierto (UTN)instname:Universidad Tecnológica Nacional2026-10-01T12:01:03Zoai:ria.utn.edu.ar:20.500.12272/7481instacron:UTNInstitucionalhttp://ria.utn.edu.ar/Universidad públicaNo correspondehttp://ria.utn.edu.ar/oaigestionria@rec.utn.edu.ar; fsuarez@rec.utn.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:a2026-10-01 12:01:04.253Repositorio Institucional Abierto (UTN) - Universidad Tecnológica Nacionalfalse
dc.title.none.fl_str_mv Plasma nitriding plus oxidizing as a protective treatment for AISI 4140 steel
title Plasma nitriding plus oxidizing as a protective treatment for AISI 4140 steel
spellingShingle Plasma nitriding plus oxidizing as a protective treatment for AISI 4140 steel
Dalibón Bähler, Eugenia Laura
Plasma nitriding
Duplex plasma treatment
AISI 4140 steel
Oxidized layer
title_short Plasma nitriding plus oxidizing as a protective treatment for AISI 4140 steel
title_full Plasma nitriding plus oxidizing as a protective treatment for AISI 4140 steel
title_fullStr Plasma nitriding plus oxidizing as a protective treatment for AISI 4140 steel
title_full_unstemmed Plasma nitriding plus oxidizing as a protective treatment for AISI 4140 steel
title_sort Plasma nitriding plus oxidizing as a protective treatment for AISI 4140 steel
dc.creator.none.fl_str_mv Dalibón Bähler, Eugenia Laura
Vergniaud, Pablo Martín
Karges, Esteban
Cabo, Amado
Brühl, Sonia Patricia
author Dalibón Bähler, Eugenia Laura
author_facet Dalibón Bähler, Eugenia Laura
Vergniaud, Pablo Martín
Karges, Esteban
Cabo, Amado
Brühl, Sonia Patricia
author_role author
author2 Vergniaud, Pablo Martín
Karges, Esteban
Cabo, Amado
Brühl, Sonia Patricia
author2_role author
author
author
author
dc.subject.none.fl_str_mv Plasma nitriding
Duplex plasma treatment
AISI 4140 steel
Oxidized layer
topic Plasma nitriding
Duplex plasma treatment
AISI 4140 steel
Oxidized layer
dc.description.none.fl_txt_mv AISI 4140 is a typical chromium molybdenum medium alloy steel, widely used as construction steel for machine components. Plasma nitriding has been applied as surface hardening treatment with success but the nitrided layer isn ́t always good for corrosion. Plasma nitriding plus oxidizing is proposed as an environmentally friendly alternative which can assure a good wear resistance and also provide a corrosion protective surface layer. In this investigation, heat treated AISI 4140 steel was plasma nitrided in a 15 hours process at 500 C and then oxidized in the same chamber using two different temperatures: 400 C and 500 C, 1 hour duration in a water steam atmosphere. Microstructure was analysed by optical and electronic microscopy and XRD. Wear resistance was tested in a pin on disk machine using alumina as counterpart and corrosion resistance was evaluated in salt spray fog tests and electrochemical tests in NaCl solution, comparing with only nitrided samples of the same steel. The oxide layer was 0.5 microns width, and the nitrided compound layer beneath, 3 microns width. XRD revealed the presence of magnetite and in a minor proportion, hematite in the oxide layer, and gamma iron nitrides in the nitrided layer. In the pin on disk tests with 3 N load no significative variations occurred between the oxidized samples compared with the only nitrided ones, neither in volume loss nor in friction coefficient. On the other hand, in the salt spray fog tests, only the nitrided samples oxidized at 400 C did not present signs of general corrosion after 100 h test. In the electrochemical tests, both oxidized samples had a nobler corrosion potential and a pseudo passive region, showing a better corrosion behaviour of the oxidized samples compared to the nitrided ones, which suffered from active dissolution in the chloride solution.
Fil: Dalibón Bahler, Eugenia Laura. Universidad Tecnológica Nacional. Facultad Regional Concepción del Uruguay. Departamento Ingeniería Electromecánica. Grupo de Ingeniería de Superficies; Argentina.
Fil: Vergniaud, Pablo Martín. Universidad Tecnológica Nacional. Facultad Regional Concepción del Uruguay. Departamento Ingeniería Electromecánica. Grupo de Ingeniería de Superficies; Argentina.
Fil: Karges, Esteban. IONAR S.A.; Argentina.
Fil: Cabo, Amado. IONAR S.A.; Argentina.
Fil: Brühl, Sonia Patricia. Universidad Tecnológica Nacional. Facultad Regional Concepción del Uruguay. Departamento Ingeniería Electromecánica. Grupo de Ingeniería de Superficies; Argentina.
Fil: Brühl, Sonia Patricia. Consejo Nacional de Investigaciones Científicas y Técnicas.
description AISI 4140 is a typical chromium molybdenum medium alloy steel, widely used as construction steel for machine components. Plasma nitriding has been applied as surface hardening treatment with success but the nitrided layer isn ́t always good for corrosion. Plasma nitriding plus oxidizing is proposed as an environmentally friendly alternative which can assure a good wear resistance and also provide a corrosion protective surface layer. In this investigation, heat treated AISI 4140 steel was plasma nitrided in a 15 hours process at 500 C and then oxidized in the same chamber using two different temperatures: 400 C and 500 C, 1 hour duration in a water steam atmosphere. Microstructure was analysed by optical and electronic microscopy and XRD. Wear resistance was tested in a pin on disk machine using alumina as counterpart and corrosion resistance was evaluated in salt spray fog tests and electrochemical tests in NaCl solution, comparing with only nitrided samples of the same steel. The oxide layer was 0.5 microns width, and the nitrided compound layer beneath, 3 microns width. XRD revealed the presence of magnetite and in a minor proportion, hematite in the oxide layer, and gamma iron nitrides in the nitrided layer. In the pin on disk tests with 3 N load no significative variations occurred between the oxidized samples compared with the only nitrided ones, neither in volume loss nor in friction coefficient. On the other hand, in the salt spray fog tests, only the nitrided samples oxidized at 400 C did not present signs of general corrosion after 100 h test. In the electrochemical tests, both oxidized samples had a nobler corrosion potential and a pseudo passive region, showing a better corrosion behaviour of the oxidized samples compared to the nitrided ones, which suffered from active dissolution in the chloride solution.
publishDate 2022
dc.date.none.fl_str_mv 2022-09-29
2023-01-24T13:07:36Z
2023-01-24T13:07:36Z
dc.type.none.fl_str_mv info:eu-repo/semantics/conferenceObject
info:eu-repo/semantics/acceptedVersion
http://purl.org/coar/resource_type/c_5794
info:ar-repo/semantics/documentoDeConferencia
format conferenceObject
status_str acceptedVersion
dc.identifier.none.fl_str_mv Congreso Internacional Materials Science and Engineering – MSE. Darmstadt, Alemania (2022).
http://hdl.handle.net/20.500.12272/7481
identifier_str_mv Congreso Internacional Materials Science and Engineering – MSE. Darmstadt, Alemania (2022).
url http://hdl.handle.net/20.500.12272/7481
dc.language.none.fl_str_mv eng
language eng
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
2023-01-24T13:07:36Z
http://creativecommons.org/licenses/by-nc-nd/4.0/
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
Dalibón, Eugenia Laura ; Vergniaud, Pablo Martín ; Karges, Esteban ; Cabo, Amado ; Brühl, Sonia Patricia.
No comercial con fines académicos.
eu_rights_str_mv openAccess
rights_invalid_str_mv 2023-01-24T13:07:36Z
http://creativecommons.org/licenses/by-nc-nd/4.0/
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
Dalibón, Eugenia Laura ; Vergniaud, Pablo Martín ; Karges, Esteban ; Cabo, Amado ; Brühl, Sonia Patricia.
No comercial con fines académicos.
dc.format.none.fl_str_mv pdf
application/pdf
application/pdf
dc.source.none.fl_str_mv reponame:Repositorio Institucional Abierto (UTN)
instname:Universidad Tecnológica Nacional
reponame_str Repositorio Institucional Abierto (UTN)
collection Repositorio Institucional Abierto (UTN)
instname_str Universidad Tecnológica Nacional
repository.name.fl_str_mv Repositorio Institucional Abierto (UTN) - Universidad Tecnológica Nacional
repository.mail.fl_str_mv gestionria@rec.utn.edu.ar; fsuarez@rec.utn.edu.ar
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score 13.365483

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