Microstructure and tribological properties of cobalt-based Stellite 6 alloy coating by electro-spark deposition

Detalhes bibliográficos
Autor(a) principal: Jing,QiFeng
Data de Publicação: 2013
Outros Autores: Tan,YeFa
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=S1516-14392013000500017
Resumo: The cobalt-based Stellite 6 coating with a thickness of 0.5 mm was deposited onto 45 carbon steel by electro-spark deposition technology. Microstructure, chemical composition, phase composition, microhardness distribution and wear resistance of the coating were researched by a series of experiments. The results indicate that, the coating with refined and compact microstructure is mainly composed of Co, Cr7C3, Co6W6C and CrCo. The coating makes metallurgical bonding interface with the substrate. Microhardness of the coating is improved significantly with an average value of 827.9 HV0.5, which is about 3.6 times that of the substrate. Under the same experimental condition, mass loss of the substrate is about 4.2-4.5 times that of the coating, so the coating shows excellent wear resistance. Main wear mechanism of the coating is abrasive wear at low speed or low load stage, and fatigue wear at high speed or heavy load condition.
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spelling Microstructure and tribological properties of cobalt-based Stellite 6 alloy coating by electro-spark depositionelectro-spark depositioncobalt-based alloycoatingmicrostructurewear resistancewear mechanismThe cobalt-based Stellite 6 coating with a thickness of 0.5 mm was deposited onto 45 carbon steel by electro-spark deposition technology. Microstructure, chemical composition, phase composition, microhardness distribution and wear resistance of the coating were researched by a series of experiments. The results indicate that, the coating with refined and compact microstructure is mainly composed of Co, Cr7C3, Co6W6C and CrCo. The coating makes metallurgical bonding interface with the substrate. Microhardness of the coating is improved significantly with an average value of 827.9 HV0.5, which is about 3.6 times that of the substrate. Under the same experimental condition, mass loss of the substrate is about 4.2-4.5 times that of the coating, so the coating shows excellent wear resistance. Main wear mechanism of the coating is abrasive wear at low speed or low load stage, and fatigue wear at high speed or heavy load condition.ABM, ABC, ABPol2013-10-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392013000500017Materials Research v.16 n.5 2013reponame:Materials research (São Carlos. Online)instname:Universidade Federal de São Carlos (UFSCAR)instacron:ABM ABC ABPOL10.1590/S1516-14392013005000082info:eu-repo/semantics/openAccessJing,QiFengTan,YeFaeng2013-10-18T00:00:00Zoai:scielo:S1516-14392013000500017Revistahttp://www.scielo.br/mrPUBhttps://old.scielo.br/oai/scielo-oai.phpdedz@power.ufscar.br1980-53731516-1439opendoar:2013-10-18T00:00Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)false
dc.title.none.fl_str_mv Microstructure and tribological properties of cobalt-based Stellite 6 alloy coating by electro-spark deposition
title Microstructure and tribological properties of cobalt-based Stellite 6 alloy coating by electro-spark deposition
spellingShingle Microstructure and tribological properties of cobalt-based Stellite 6 alloy coating by electro-spark deposition
Jing,QiFeng
electro-spark deposition
cobalt-based alloy
coating
microstructure
wear resistance
wear mechanism
title_short Microstructure and tribological properties of cobalt-based Stellite 6 alloy coating by electro-spark deposition
title_full Microstructure and tribological properties of cobalt-based Stellite 6 alloy coating by electro-spark deposition
title_fullStr Microstructure and tribological properties of cobalt-based Stellite 6 alloy coating by electro-spark deposition
title_full_unstemmed Microstructure and tribological properties of cobalt-based Stellite 6 alloy coating by electro-spark deposition
title_sort Microstructure and tribological properties of cobalt-based Stellite 6 alloy coating by electro-spark deposition
author Jing,QiFeng
author_facet Jing,QiFeng
Tan,YeFa
author_role author
author2 Tan,YeFa
author2_role author
dc.contributor.author.fl_str_mv Jing,QiFeng
Tan,YeFa
dc.subject.por.fl_str_mv electro-spark deposition
cobalt-based alloy
coating
microstructure
wear resistance
wear mechanism
topic electro-spark deposition
cobalt-based alloy
coating
microstructure
wear resistance
wear mechanism
description The cobalt-based Stellite 6 coating with a thickness of 0.5 mm was deposited onto 45 carbon steel by electro-spark deposition technology. Microstructure, chemical composition, phase composition, microhardness distribution and wear resistance of the coating were researched by a series of experiments. The results indicate that, the coating with refined and compact microstructure is mainly composed of Co, Cr7C3, Co6W6C and CrCo. The coating makes metallurgical bonding interface with the substrate. Microhardness of the coating is improved significantly with an average value of 827.9 HV0.5, which is about 3.6 times that of the substrate. Under the same experimental condition, mass loss of the substrate is about 4.2-4.5 times that of the coating, so the coating shows excellent wear resistance. Main wear mechanism of the coating is abrasive wear at low speed or low load stage, and fatigue wear at high speed or heavy load condition.
publishDate 2013
dc.date.none.fl_str_mv 2013-10-01
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=S1516-14392013000500017
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392013000500017
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S1516-14392013005000082
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.16 n.5 2013
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_ 1754212662928998400

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