Influence of laser structural patterning on the tribological performance of C-alloyed W-S coatings
Autor(a) principal: | |
---|---|
Data de Publicação: | 2020 |
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/10773/37312 |
Resumo: | In this paper, we are proposing for the first time the partial laser treatment of a self-lubricating coating in order to optimize its frictional performance from the very first moments of the sliding contact. W-S films alloyed with carbon were deposited by closed field unbalanced magnetron sputtering. The coatings were treated using two types of lasers, with peak emissions in the UV and IR, under different laser power conditions and patterning. The structure, mechanical and tribological properties of the treated coatings were analysed using X-ray diffraction (XRD), Raman spectroscopy, nanoindentation and reciprocating ball-on-disk tribometry. Although XRD diffractograms illustrated an overall amorphous structure in all as-deposited and treated samples, their Raman spectra confirmed the presence of WS2 crystalline phase in some of the treated areas. Furthermore, in the samples where WS2 Raman peaks were detected, the friction coefficient was in the initial part of the test lower than that of untreated coating. Previous crystallization of the W-S phase before tribological testing has a key role for shortening the self-adaption process improving the overall friction performance of the coatings. |
id |
RCAP_eb7a9866dd770bdd2ac86638372a98df |
---|---|
oai_identifier_str |
oai:ria.ua.pt:10773/37312 |
network_acronym_str |
RCAP |
network_name_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository_id_str |
7160 |
spelling |
Influence of laser structural patterning on the tribological performance of C-alloyed W-S coatingsTransition metal dichalcogenidesLaser treatmentMagnetron sputteringSelf-lubricationTribolayerIn this paper, we are proposing for the first time the partial laser treatment of a self-lubricating coating in order to optimize its frictional performance from the very first moments of the sliding contact. W-S films alloyed with carbon were deposited by closed field unbalanced magnetron sputtering. The coatings were treated using two types of lasers, with peak emissions in the UV and IR, under different laser power conditions and patterning. The structure, mechanical and tribological properties of the treated coatings were analysed using X-ray diffraction (XRD), Raman spectroscopy, nanoindentation and reciprocating ball-on-disk tribometry. Although XRD diffractograms illustrated an overall amorphous structure in all as-deposited and treated samples, their Raman spectra confirmed the presence of WS2 crystalline phase in some of the treated areas. Furthermore, in the samples where WS2 Raman peaks were detected, the friction coefficient was in the initial part of the test lower than that of untreated coating. Previous crystallization of the W-S phase before tribological testing has a key role for shortening the self-adaption process improving the overall friction performance of the coatings.Elsevier2023-04-24T11:06:50Z2020-07-25T00:00:00Z2020-07-25info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10773/37312eng0257-897210.1016/j.surfcoat.2020.125822Shamshiri, MohammadrezaManaia, AnaVuchkov, TodorCarvalho, AlexandreGaspar, GuilhermeFernandes, AntónioDolatabadi, Samaneh HeydarianCosta, FlorindaCavaleiro, Albanoinfo: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:RCAAP2024-02-22T12:12:01Zoai:ria.ua.pt:10773/37312Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T03:07:56.392272Repositório 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 |
Influence of laser structural patterning on the tribological performance of C-alloyed W-S coatings |
title |
Influence of laser structural patterning on the tribological performance of C-alloyed W-S coatings |
spellingShingle |
Influence of laser structural patterning on the tribological performance of C-alloyed W-S coatings Shamshiri, Mohammadreza Transition metal dichalcogenides Laser treatment Magnetron sputtering Self-lubrication Tribolayer |
title_short |
Influence of laser structural patterning on the tribological performance of C-alloyed W-S coatings |
title_full |
Influence of laser structural patterning on the tribological performance of C-alloyed W-S coatings |
title_fullStr |
Influence of laser structural patterning on the tribological performance of C-alloyed W-S coatings |
title_full_unstemmed |
Influence of laser structural patterning on the tribological performance of C-alloyed W-S coatings |
title_sort |
Influence of laser structural patterning on the tribological performance of C-alloyed W-S coatings |
author |
Shamshiri, Mohammadreza |
author_facet |
Shamshiri, Mohammadreza Manaia, Ana Vuchkov, Todor Carvalho, Alexandre Gaspar, Guilherme Fernandes, António Dolatabadi, Samaneh Heydarian Costa, Florinda Cavaleiro, Albano |
author_role |
author |
author2 |
Manaia, Ana Vuchkov, Todor Carvalho, Alexandre Gaspar, Guilherme Fernandes, António Dolatabadi, Samaneh Heydarian Costa, Florinda Cavaleiro, Albano |
author2_role |
author author author author author author author author |
dc.contributor.author.fl_str_mv |
Shamshiri, Mohammadreza Manaia, Ana Vuchkov, Todor Carvalho, Alexandre Gaspar, Guilherme Fernandes, António Dolatabadi, Samaneh Heydarian Costa, Florinda Cavaleiro, Albano |
dc.subject.por.fl_str_mv |
Transition metal dichalcogenides Laser treatment Magnetron sputtering Self-lubrication Tribolayer |
topic |
Transition metal dichalcogenides Laser treatment Magnetron sputtering Self-lubrication Tribolayer |
description |
In this paper, we are proposing for the first time the partial laser treatment of a self-lubricating coating in order to optimize its frictional performance from the very first moments of the sliding contact. W-S films alloyed with carbon were deposited by closed field unbalanced magnetron sputtering. The coatings were treated using two types of lasers, with peak emissions in the UV and IR, under different laser power conditions and patterning. The structure, mechanical and tribological properties of the treated coatings were analysed using X-ray diffraction (XRD), Raman spectroscopy, nanoindentation and reciprocating ball-on-disk tribometry. Although XRD diffractograms illustrated an overall amorphous structure in all as-deposited and treated samples, their Raman spectra confirmed the presence of WS2 crystalline phase in some of the treated areas. Furthermore, in the samples where WS2 Raman peaks were detected, the friction coefficient was in the initial part of the test lower than that of untreated coating. Previous crystallization of the W-S phase before tribological testing has a key role for shortening the self-adaption process improving the overall friction performance of the coatings. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-07-25T00:00:00Z 2020-07-25 2023-04-24T11:06:50Z |
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/10773/37312 |
url |
http://hdl.handle.net/10773/37312 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
0257-8972 10.1016/j.surfcoat.2020.125822 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
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 |
instname_str |
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_ |
1799137733235441664 |