New ASPN high efficiency treatment of ASTM M2 steel
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/219612 |
Resumo: | Plasma nitriding treatments are applied to achieve excellent surface properties on steel parts and tools. Active screen plasma nitriding (ASPN) does not have the defects presents in direct nitriding plasma treatments (DCPN). However, ASPN require much longer processing times to develop surface layers as deep as those of DCPN. This work presents the development of a biased ASPN treatment system, to investigate the possibility of achieving greater efficiency. The treatments were performed on ASTM M2 steel samples using the same processing parameters in 4 different configurations: DCPN, ASPN and 2 active screen plasma nitriding with biased specimens voltage: one was called "bright bias", because biased voltage is high enough to develop a plasma glow on the samples, and the other "dark bias", where no plasma glow sheath is seen on the samples. The active screen dark biased treatment presented the best results. These results could be understood by the electromagnetic field generated by the bias source promoting the deposition of nitrogen ions on the surface of the part being treated. Therefore, it was demonstrated that the use of dark bias voltage in the active screen treatment in larger reactors is fundamental to achieve good nitriding results in smaller times. |
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Lima, Edison SilvaOliveira, Leonardo FonsecaRocha, Alexandre da Silva2021-04-08T04:17:39Z20211516-1439http://hdl.handle.net/10183/219612001123539Plasma nitriding treatments are applied to achieve excellent surface properties on steel parts and tools. Active screen plasma nitriding (ASPN) does not have the defects presents in direct nitriding plasma treatments (DCPN). However, ASPN require much longer processing times to develop surface layers as deep as those of DCPN. This work presents the development of a biased ASPN treatment system, to investigate the possibility of achieving greater efficiency. The treatments were performed on ASTM M2 steel samples using the same processing parameters in 4 different configurations: DCPN, ASPN and 2 active screen plasma nitriding with biased specimens voltage: one was called "bright bias", because biased voltage is high enough to develop a plasma glow on the samples, and the other "dark bias", where no plasma glow sheath is seen on the samples. The active screen dark biased treatment presented the best results. These results could be understood by the electromagnetic field generated by the bias source promoting the deposition of nitrogen ions on the surface of the part being treated. Therefore, it was demonstrated that the use of dark bias voltage in the active screen treatment in larger reactors is fundamental to achieve good nitriding results in smaller times.application/pdfengMaterials research : ibero-american journal of materials. São Carlos, SP. Vol. 24, n. 1 (2021), e20200404, 6 p.Aço-ferramentaNitretação a plasmaPlasma nitridingActive screenASTM M2Surface treatmentBias voltageNew ASPN high efficiency treatment of ASTM M2 steelinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/otherinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSTEXT001123539.pdf.txt001123539.pdf.txtExtracted Texttext/plain21567http://www.lume.ufrgs.br/bitstream/10183/219612/2/001123539.pdf.txtbd42a2526058890b91787647df8b3686MD52ORIGINAL001123539.pdfTexto completo (inglês)application/pdf2248755http://www.lume.ufrgs.br/bitstream/10183/219612/1/001123539.pdf28a046d1295a489b937071bb7df47fd8MD5110183/2196122021-05-07 05:04:36.776997oai:www.lume.ufrgs.br:10183/219612Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2021-05-07T08:04:36Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
New ASPN high efficiency treatment of ASTM M2 steel |
title |
New ASPN high efficiency treatment of ASTM M2 steel |
spellingShingle |
New ASPN high efficiency treatment of ASTM M2 steel Lima, Edison Silva Aço-ferramenta Nitretação a plasma Plasma nitriding Active screen ASTM M2 Surface treatment Bias voltage |
title_short |
New ASPN high efficiency treatment of ASTM M2 steel |
title_full |
New ASPN high efficiency treatment of ASTM M2 steel |
title_fullStr |
New ASPN high efficiency treatment of ASTM M2 steel |
title_full_unstemmed |
New ASPN high efficiency treatment of ASTM M2 steel |
title_sort |
New ASPN high efficiency treatment of ASTM M2 steel |
author |
Lima, Edison Silva |
author_facet |
Lima, Edison Silva Oliveira, Leonardo Fonseca Rocha, Alexandre da Silva |
author_role |
author |
author2 |
Oliveira, Leonardo Fonseca Rocha, Alexandre da Silva |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Lima, Edison Silva Oliveira, Leonardo Fonseca Rocha, Alexandre da Silva |
dc.subject.por.fl_str_mv |
Aço-ferramenta Nitretação a plasma |
topic |
Aço-ferramenta Nitretação a plasma Plasma nitriding Active screen ASTM M2 Surface treatment Bias voltage |
dc.subject.eng.fl_str_mv |
Plasma nitriding Active screen ASTM M2 Surface treatment Bias voltage |
description |
Plasma nitriding treatments are applied to achieve excellent surface properties on steel parts and tools. Active screen plasma nitriding (ASPN) does not have the defects presents in direct nitriding plasma treatments (DCPN). However, ASPN require much longer processing times to develop surface layers as deep as those of DCPN. This work presents the development of a biased ASPN treatment system, to investigate the possibility of achieving greater efficiency. The treatments were performed on ASTM M2 steel samples using the same processing parameters in 4 different configurations: DCPN, ASPN and 2 active screen plasma nitriding with biased specimens voltage: one was called "bright bias", because biased voltage is high enough to develop a plasma glow on the samples, and the other "dark bias", where no plasma glow sheath is seen on the samples. The active screen dark biased treatment presented the best results. These results could be understood by the electromagnetic field generated by the bias source promoting the deposition of nitrogen ions on the surface of the part being treated. Therefore, it was demonstrated that the use of dark bias voltage in the active screen treatment in larger reactors is fundamental to achieve good nitriding results in smaller times. |
publishDate |
2021 |
dc.date.accessioned.fl_str_mv |
2021-04-08T04:17:39Z |
dc.date.issued.fl_str_mv |
2021 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/other |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10183/219612 |
dc.identifier.issn.pt_BR.fl_str_mv |
1516-1439 |
dc.identifier.nrb.pt_BR.fl_str_mv |
001123539 |
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1516-1439 001123539 |
url |
http://hdl.handle.net/10183/219612 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
Materials research : ibero-american journal of materials. São Carlos, SP. Vol. 24, n. 1 (2021), e20200404, 6 p. |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
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application/pdf |
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