Changing the characteristics of the nitrided layer using three different plasma configurations
Autor(a) principal: | |
---|---|
Data de Publicação: | 2019 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Matéria (Rio de Janeiro. Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-70762019000200331 |
Resumo: | ABSTRACT Direct current (DC) plasma nitriding offers some disadvantages, especially in parts with complex geometries, where the presence of edges is significant, such as gears, molds, and needle punched parts are strongly affected by this effect, leading to irregular formation of nitrided layers and high variation in surface hardness. To solve these problems two techniques were developed as alternatives, namely: pulsed plasma nitriding and cathodic cage nitriding. In this work, these three nitriding techniques were compared using AISI 1045 steel as substrate. Steel discs were nitrided with the purpose of evaluating the influence of these different plasma configurations on the characteristics of the nitrided layer. The treatments in the three techniques were carried out at the same pressure, temperature, time and gas atmosphere. The samples were characterized for the microstructure, microhardness and crystalline phases present. X-ray diffraction with grazing incidence was used to verify the order of the nitrites formed and to estimate the thickness of the single-phase layers. Differences between the configurations with respect to the occurrence of restriction rings, total thickness (xε +xγ') and relative (xε/xγ') compound layers were observed. |
id |
RLAM-1_9ee737a523abef271f0652d876e0c0a6 |
---|---|
oai_identifier_str |
oai:scielo:S1517-70762019000200331 |
network_acronym_str |
RLAM-1 |
network_name_str |
Matéria (Rio de Janeiro. Online) |
repository_id_str |
|
spelling |
Changing the characteristics of the nitrided layer using three different plasma configurationsPlasma DCcathodic cagepulsed plasmanitridingGIXRDABSTRACT Direct current (DC) plasma nitriding offers some disadvantages, especially in parts with complex geometries, where the presence of edges is significant, such as gears, molds, and needle punched parts are strongly affected by this effect, leading to irregular formation of nitrided layers and high variation in surface hardness. To solve these problems two techniques were developed as alternatives, namely: pulsed plasma nitriding and cathodic cage nitriding. In this work, these three nitriding techniques were compared using AISI 1045 steel as substrate. Steel discs were nitrided with the purpose of evaluating the influence of these different plasma configurations on the characteristics of the nitrided layer. The treatments in the three techniques were carried out at the same pressure, temperature, time and gas atmosphere. The samples were characterized for the microstructure, microhardness and crystalline phases present. X-ray diffraction with grazing incidence was used to verify the order of the nitrites formed and to estimate the thickness of the single-phase layers. Differences between the configurations with respect to the occurrence of restriction rings, total thickness (xε +xγ') and relative (xε/xγ') compound layers were observed.Laboratório de Hidrogênio, Coppe - Universidade Federal do Rio de Janeiroem cooperação com a Associação Brasileira do Hidrogênio, ABH22019-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-70762019000200331Matéria (Rio de Janeiro) v.24 n.2 2019reponame:Matéria (Rio de Janeiro. Online)instname:Matéria (Rio de Janeiro. Online)instacron:RLAM10.1590/s1517-707620190002.0686info:eu-repo/semantics/openAccessAlves Junior,ClodomiroFreitas,Nathalia Viviane de SousaMorais,Priscila Borges deVitoriano,Jussier de Oliveiraeng2020-07-22T00:00:00Zoai:scielo:S1517-70762019000200331Revistahttp://www.materia.coppe.ufrj.br/https://old.scielo.br/oai/scielo-oai.php||materia@labh2.coppe.ufrj.br1517-70761517-7076opendoar:2020-07-22T00:00Matéria (Rio de Janeiro. Online) - Matéria (Rio de Janeiro. Online)false |
dc.title.none.fl_str_mv |
Changing the characteristics of the nitrided layer using three different plasma configurations |
title |
Changing the characteristics of the nitrided layer using three different plasma configurations |
spellingShingle |
Changing the characteristics of the nitrided layer using three different plasma configurations Alves Junior,Clodomiro Plasma DC cathodic cage pulsed plasma nitriding GIXRD |
title_short |
Changing the characteristics of the nitrided layer using three different plasma configurations |
title_full |
Changing the characteristics of the nitrided layer using three different plasma configurations |
title_fullStr |
Changing the characteristics of the nitrided layer using three different plasma configurations |
title_full_unstemmed |
Changing the characteristics of the nitrided layer using three different plasma configurations |
title_sort |
Changing the characteristics of the nitrided layer using three different plasma configurations |
author |
Alves Junior,Clodomiro |
author_facet |
Alves Junior,Clodomiro Freitas,Nathalia Viviane de Sousa Morais,Priscila Borges de Vitoriano,Jussier de Oliveira |
author_role |
author |
author2 |
Freitas,Nathalia Viviane de Sousa Morais,Priscila Borges de Vitoriano,Jussier de Oliveira |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Alves Junior,Clodomiro Freitas,Nathalia Viviane de Sousa Morais,Priscila Borges de Vitoriano,Jussier de Oliveira |
dc.subject.por.fl_str_mv |
Plasma DC cathodic cage pulsed plasma nitriding GIXRD |
topic |
Plasma DC cathodic cage pulsed plasma nitriding GIXRD |
description |
ABSTRACT Direct current (DC) plasma nitriding offers some disadvantages, especially in parts with complex geometries, where the presence of edges is significant, such as gears, molds, and needle punched parts are strongly affected by this effect, leading to irregular formation of nitrided layers and high variation in surface hardness. To solve these problems two techniques were developed as alternatives, namely: pulsed plasma nitriding and cathodic cage nitriding. In this work, these three nitriding techniques were compared using AISI 1045 steel as substrate. Steel discs were nitrided with the purpose of evaluating the influence of these different plasma configurations on the characteristics of the nitrided layer. The treatments in the three techniques were carried out at the same pressure, temperature, time and gas atmosphere. The samples were characterized for the microstructure, microhardness and crystalline phases present. X-ray diffraction with grazing incidence was used to verify the order of the nitrites formed and to estimate the thickness of the single-phase layers. Differences between the configurations with respect to the occurrence of restriction rings, total thickness (xε +xγ') and relative (xε/xγ') compound layers were observed. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-01-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-70762019000200331 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-70762019000200331 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/s1517-707620190002.0686 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Laboratório de Hidrogênio, Coppe - Universidade Federal do Rio de Janeiro em cooperação com a Associação Brasileira do Hidrogênio, ABH2 |
publisher.none.fl_str_mv |
Laboratório de Hidrogênio, Coppe - Universidade Federal do Rio de Janeiro em cooperação com a Associação Brasileira do Hidrogênio, ABH2 |
dc.source.none.fl_str_mv |
Matéria (Rio de Janeiro) v.24 n.2 2019 reponame:Matéria (Rio de Janeiro. Online) instname:Matéria (Rio de Janeiro. Online) instacron:RLAM |
instname_str |
Matéria (Rio de Janeiro. Online) |
instacron_str |
RLAM |
institution |
RLAM |
reponame_str |
Matéria (Rio de Janeiro. Online) |
collection |
Matéria (Rio de Janeiro. Online) |
repository.name.fl_str_mv |
Matéria (Rio de Janeiro. Online) - Matéria (Rio de Janeiro. Online) |
repository.mail.fl_str_mv |
||materia@labh2.coppe.ufrj.br |
_version_ |
1752126692008132608 |