Pulsed dc discharge in the presence of active screen for nitriding of high carbon steel

Detalhes bibliográficos
Autor(a) principal: Saeed,Adnan
Data de Publicação: 2014
Outros Autores: Khan,Abdul Waheed, Jan,Faiq, Waqar,Muhammad, Abrar,Muhammad, Mujahid,Zaka - Ul - Islam, Hussnain,Ali, Zakaullah,Muhammad
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.
id ABMABCABPOL-1_7c3567d54f162f5e33ec8d1eecd8b408
oai_identifier_str oai:scielo:S1516-14392014000400009
network_acronym_str ABMABCABPOL-1
network_name_str Materials research (São Carlos. Online)
repository_id_str
spelling 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

Registros relacionados