Corrosion resistance of AISI 316L stainless steel nitrided by three different plasma assisted techniques

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Plasma assisted surface modification methods have been used to nitride stainless steels in order to enhance and therefore the lifetime of industrial components. Nevertheless, the corrosion resistance is not always preserved since it is very sensitive to the process parameters, either in implantation...

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Autores principales: Manova, Darina, Mändl, Stephan, Brühl, Sonia Patricia, Escalada, Lisandro, Simison, Silvia
Formato: Documento de conferencia acceptedVersion
Lenguaje:Inglés
Publicado: 2021
Materias:
Plasma nitriding
Stainless steel
Corrosión
Acceso en línea:http://hdl.handle.net/20.500.12272/4792
Aporte de:
RIA - Repositorio Institucional Abierto (UTN) de Universidad Tecnológica Nacional
id I68-R174-20.500.12272-4792
record_format dspace
institution Universidad Tecnológica Nacional
institution_str I-68
repository_str R-174
collection RIA - Repositorio Institucional Abierto (UTN)
language Inglés
topic Plasma nitriding
Stainless steel
Corrosión
spellingShingle Plasma nitriding
Stainless steel
Corrosión
Manova, Darina
Mändl, Stephan
Brühl, Sonia Patricia
Escalada, Lisandro
Simison, Silvia
Corrosion resistance of AISI 316L stainless steel nitrided by three different plasma assisted techniques
topic_facet Plasma nitriding
Stainless steel
Corrosión
description Plasma assisted surface modification methods have been used to nitride stainless steels in order to enhance and therefore the lifetime of industrial components. Nevertheless, the corrosion resistance is not always preserved since it is very sensitive to the process parameters, either in implantation or in thermochemical diffusion techniques. AISI 316L stainless steel was plasma nitrided using three different techniques: low energy ion implantation (LEII), plasma immersion implantation (PI3) and convencional DC pulsed plasma nitriding (DCPN). For each method sveral parameters were tested and some of them were selectedto achieve the so called S phase of about 3 um thickness and no nitrides precipitation. The nitrided layer was characterized with OM and SEM. Hardness wass assessed on the surface with Vickers indenter and 25 g load. XRD was performed to characterize The S phase and to detect other phases if present and electrochemical corrosion tests were carried out in 3.5% NaCI solution. Although the S phase thickness in the three groups of samples was comparable, hardness was not and neither wasthe corrosion resistance. The PI3 samples were he hardest with the best performance in corrosion experiments, resulting in a higher breakdown potencial and lower currents.
format Documento de conferencia
acceptedVersion
author Manova, Darina
Mändl, Stephan
Brühl, Sonia Patricia
Escalada, Lisandro
Simison, Silvia
author_facet Manova, Darina
Mändl, Stephan
Brühl, Sonia Patricia
Escalada, Lisandro
Simison, Silvia
author_sort Manova, Darina
title Corrosion resistance of AISI 316L stainless steel nitrided by three different plasma assisted techniques
title_short Corrosion resistance of AISI 316L stainless steel nitrided by three different plasma assisted techniques
title_full Corrosion resistance of AISI 316L stainless steel nitrided by three different plasma assisted techniques
title_fullStr Corrosion resistance of AISI 316L stainless steel nitrided by three different plasma assisted techniques
title_full_unstemmed Corrosion resistance of AISI 316L stainless steel nitrided by three different plasma assisted techniques
title_sort corrosion resistance of aisi 316l stainless steel nitrided by three different plasma assisted techniques
publishDate 2021
url http://hdl.handle.net/20.500.12272/4792
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