Pulsed dc discharge in the presence of active screen for nitriding of high carbon steel
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Outros Autores: | , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Materials research (São Carlos. Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392014000400009 |
Resumo: | A discharge of nitrogen - hydrogen mixture by 50 Hz pulsed dc in the presence of active screen cage is investigated by optical emission spectroscopy (OES). The aim is to identify the parameters (mixture ratio, filling pressure and current density) that may lead to high concentration of active species (N2, N2+ and N). The maximum concentration in this experiment is found with 40% H2 - 60% N2, at filling pressure of 3 mbar with current density of 5 mAcm-2. High carbon steel samples are nitrided for 1 - 4 hours at 500ºC and the treated samples are characterized by X - ray diffraction (XRD), Raman spectroscopy and Vicker's micro - hardness testing. The XRD spectra show different phases of nitrides (Fe2 - 3N, FeN, CrN) along with iron oxides. The Raman spectra confirm the formation of α - β (C3N4). The surface hardness is found to increase up to six times for 2 hour treatment. |
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Materials research (São Carlos. Online) |
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Pulsed dc discharge in the presence of active screen for nitriding of high carbon steelCathodic cageplasma nitridingedge effectA discharge of nitrogen - hydrogen mixture by 50 Hz pulsed dc in the presence of active screen cage is investigated by optical emission spectroscopy (OES). The aim is to identify the parameters (mixture ratio, filling pressure and current density) that may lead to high concentration of active species (N2, N2+ and N). The maximum concentration in this experiment is found with 40% H2 - 60% N2, at filling pressure of 3 mbar with current density of 5 mAcm-2. High carbon steel samples are nitrided for 1 - 4 hours at 500ºC and the treated samples are characterized by X - ray diffraction (XRD), Raman spectroscopy and Vicker's micro - hardness testing. The XRD spectra show different phases of nitrides (Fe2 - 3N, FeN, CrN) along with iron oxides. The Raman spectra confirm the formation of α - β (C3N4). The surface hardness is found to increase up to six times for 2 hour treatment.ABM, ABC, ABPol2014-08-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392014000400009Materials Research v.17 n.4 2014reponame:Materials research (São Carlos. Online)instname:Universidade Federal de São Carlos (UFSCAR)instacron:ABM ABC ABPOL10.1590/1516-1439.242713info:eu-repo/semantics/openAccessSaeed,AdnanKhan,Abdul WaheedJan,FaiqWaqar,MuhammadAbrar,MuhammadMujahid,Zaka - Ul - IslamHussnain,AliZakaullah,Muhammadeng2014-09-16T00:00:00Zoai:scielo:S1516-14392014000400009Revistahttp://www.scielo.br/mrPUBhttps://old.scielo.br/oai/scielo-oai.phpdedz@power.ufscar.br1980-53731516-1439opendoar:2014-09-16T00:00Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)false |
dc.title.none.fl_str_mv |
Pulsed dc discharge in the presence of active screen for nitriding of high carbon steel |
title |
Pulsed dc discharge in the presence of active screen for nitriding of high carbon steel |
spellingShingle |
Pulsed dc discharge in the presence of active screen for nitriding of high carbon steel Saeed,Adnan Cathodic cage plasma nitriding edge effect |
title_short |
Pulsed dc discharge in the presence of active screen for nitriding of high carbon steel |
title_full |
Pulsed dc discharge in the presence of active screen for nitriding of high carbon steel |
title_fullStr |
Pulsed dc discharge in the presence of active screen for nitriding of high carbon steel |
title_full_unstemmed |
Pulsed dc discharge in the presence of active screen for nitriding of high carbon steel |
title_sort |
Pulsed dc discharge in the presence of active screen for nitriding of high carbon steel |
author |
Saeed,Adnan |
author_facet |
Saeed,Adnan Khan,Abdul Waheed Jan,Faiq Waqar,Muhammad Abrar,Muhammad Mujahid,Zaka - Ul - Islam Hussnain,Ali Zakaullah,Muhammad |
author_role |
author |
author2 |
Khan,Abdul Waheed Jan,Faiq Waqar,Muhammad Abrar,Muhammad Mujahid,Zaka - Ul - Islam Hussnain,Ali Zakaullah,Muhammad |
author2_role |
author author author author author author author |
dc.contributor.author.fl_str_mv |
Saeed,Adnan Khan,Abdul Waheed Jan,Faiq Waqar,Muhammad Abrar,Muhammad Mujahid,Zaka - Ul - Islam Hussnain,Ali Zakaullah,Muhammad |
dc.subject.por.fl_str_mv |
Cathodic cage plasma nitriding edge effect |
topic |
Cathodic cage plasma nitriding edge effect |
description |
A discharge of nitrogen - hydrogen mixture by 50 Hz pulsed dc in the presence of active screen cage is investigated by optical emission spectroscopy (OES). The aim is to identify the parameters (mixture ratio, filling pressure and current density) that may lead to high concentration of active species (N2, N2+ and N). The maximum concentration in this experiment is found with 40% H2 - 60% N2, at filling pressure of 3 mbar with current density of 5 mAcm-2. High carbon steel samples are nitrided for 1 - 4 hours at 500ºC and the treated samples are characterized by X - ray diffraction (XRD), Raman spectroscopy and Vicker's micro - hardness testing. The XRD spectra show different phases of nitrides (Fe2 - 3N, FeN, CrN) along with iron oxides. The Raman spectra confirm the formation of α - β (C3N4). The surface hardness is found to increase up to six times for 2 hour treatment. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-08-01 |
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=S1516-14392014000400009 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392014000400009 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/1516-1439.242713 |
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 |
ABM, ABC, ABPol |
publisher.none.fl_str_mv |
ABM, ABC, ABPol |
dc.source.none.fl_str_mv |
Materials Research v.17 n.4 2014 reponame:Materials research (São Carlos. Online) instname:Universidade Federal de São Carlos (UFSCAR) instacron:ABM ABC ABPOL |
instname_str |
Universidade Federal de São Carlos (UFSCAR) |
instacron_str |
ABM ABC ABPOL |
institution |
ABM ABC ABPOL |
reponame_str |
Materials research (São Carlos. Online) |
collection |
Materials research (São Carlos. Online) |
repository.name.fl_str_mv |
Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR) |
repository.mail.fl_str_mv |
dedz@power.ufscar.br |
_version_ |
1754212665048170496 |