Ultra-low friction W–S–N solid lubricant coating
Autor(a) principal: | |
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Data de Publicação: | 2013 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10316/27273 https://doi.org/10.1016/j.surfcoat.2013.06.026 |
Resumo: | W–S–N films were deposited by reactive magnetron sputtering from WS2 target in Ar/N2 atmosphere. Besides the standard evaluation of composition, structure, morphology, hardness and cohesion/adhesion, the core objective of this paper was to analyze coating tribological behavior. The chemical composition was 34 at.% N, 12 at.% O, 29 at.% W and 25 at.% S, and the as-deposited films were completely amorphous. The film thickness was 2.3 μm, including the approximately 300-nm thick adhesion improving titanium interlayer. The friction coefficient was lower than 0.003 when sliding in dry nitrogen. The coating showed remarkable wear resistance surviving more than 2 million laps on pin-on-dics. The excellent friction properties were attributed to the formation of a thin tungsten disulfide tribofilm on the top of the wear track of the coating and on the counterpart surface. Moreover, the coating showed ability to replenish damaged areas with solid lubricant. We demonstrated that a structural transformation of the coating from an amorphous-like to a gradient quasi-ordered structure and an ordered transfer layer formation improved mechanical properties and radically decreased friction and wear. |
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Ultra-low friction W–S–N solid lubricant coatingTungsten disulfideUltra-low frictionSelf-lubricantCoatingMagnetron sputteringW–S–N films were deposited by reactive magnetron sputtering from WS2 target in Ar/N2 atmosphere. Besides the standard evaluation of composition, structure, morphology, hardness and cohesion/adhesion, the core objective of this paper was to analyze coating tribological behavior. The chemical composition was 34 at.% N, 12 at.% O, 29 at.% W and 25 at.% S, and the as-deposited films were completely amorphous. The film thickness was 2.3 μm, including the approximately 300-nm thick adhesion improving titanium interlayer. The friction coefficient was lower than 0.003 when sliding in dry nitrogen. The coating showed remarkable wear resistance surviving more than 2 million laps on pin-on-dics. The excellent friction properties were attributed to the formation of a thin tungsten disulfide tribofilm on the top of the wear track of the coating and on the counterpart surface. Moreover, the coating showed ability to replenish damaged areas with solid lubricant. We demonstrated that a structural transformation of the coating from an amorphous-like to a gradient quasi-ordered structure and an ordered transfer layer formation improved mechanical properties and radically decreased friction and wear.Elsevier2013-10-15info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10316/27273http://hdl.handle.net/10316/27273https://doi.org/10.1016/j.surfcoat.2013.06.026engGUSTAVSSON, Fradrik [et. al] - Ultra-low friction W–S–N solid lubricant coating. "Surface and Coatings Technology". ISSN 0257-8972. Vol. 232 (2013) p. 541-5480257-8972http://www.sciencedirect.com/science/article/pii/S0257897213005276Gustavsson, FredrikJacobson, StaffanCavaleiro, AlbanoPolcar, Tomasinfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2020-05-29T09:42:33Zoai:estudogeral.uc.pt:10316/27273Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T20:58:36.386047Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Ultra-low friction W–S–N solid lubricant coating |
title |
Ultra-low friction W–S–N solid lubricant coating |
spellingShingle |
Ultra-low friction W–S–N solid lubricant coating Gustavsson, Fredrik Tungsten disulfide Ultra-low friction Self-lubricant Coating Magnetron sputtering |
title_short |
Ultra-low friction W–S–N solid lubricant coating |
title_full |
Ultra-low friction W–S–N solid lubricant coating |
title_fullStr |
Ultra-low friction W–S–N solid lubricant coating |
title_full_unstemmed |
Ultra-low friction W–S–N solid lubricant coating |
title_sort |
Ultra-low friction W–S–N solid lubricant coating |
author |
Gustavsson, Fredrik |
author_facet |
Gustavsson, Fredrik Jacobson, Staffan Cavaleiro, Albano Polcar, Tomas |
author_role |
author |
author2 |
Jacobson, Staffan Cavaleiro, Albano Polcar, Tomas |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Gustavsson, Fredrik Jacobson, Staffan Cavaleiro, Albano Polcar, Tomas |
dc.subject.por.fl_str_mv |
Tungsten disulfide Ultra-low friction Self-lubricant Coating Magnetron sputtering |
topic |
Tungsten disulfide Ultra-low friction Self-lubricant Coating Magnetron sputtering |
description |
W–S–N films were deposited by reactive magnetron sputtering from WS2 target in Ar/N2 atmosphere. Besides the standard evaluation of composition, structure, morphology, hardness and cohesion/adhesion, the core objective of this paper was to analyze coating tribological behavior. The chemical composition was 34 at.% N, 12 at.% O, 29 at.% W and 25 at.% S, and the as-deposited films were completely amorphous. The film thickness was 2.3 μm, including the approximately 300-nm thick adhesion improving titanium interlayer. The friction coefficient was lower than 0.003 when sliding in dry nitrogen. The coating showed remarkable wear resistance surviving more than 2 million laps on pin-on-dics. The excellent friction properties were attributed to the formation of a thin tungsten disulfide tribofilm on the top of the wear track of the coating and on the counterpart surface. Moreover, the coating showed ability to replenish damaged areas with solid lubricant. We demonstrated that a structural transformation of the coating from an amorphous-like to a gradient quasi-ordered structure and an ordered transfer layer formation improved mechanical properties and radically decreased friction and wear. |
publishDate |
2013 |
dc.date.none.fl_str_mv |
2013-10-15 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10316/27273 http://hdl.handle.net/10316/27273 https://doi.org/10.1016/j.surfcoat.2013.06.026 |
url |
http://hdl.handle.net/10316/27273 https://doi.org/10.1016/j.surfcoat.2013.06.026 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
GUSTAVSSON, Fradrik [et. al] - Ultra-low friction W–S–N solid lubricant coating. "Surface and Coatings Technology". ISSN 0257-8972. Vol. 232 (2013) p. 541-548 0257-8972 http://www.sciencedirect.com/science/article/pii/S0257897213005276 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
Elsevier |
publisher.none.fl_str_mv |
Elsevier |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
|
_version_ |
1799133877607858176 |