Tribological behaviour of reactive and co-sputtered W-S-C coatings

Detalhes bibliográficos
Autor(a) principal: Evaristo,M.
Data de Publicação: 2006
Outros Autores: Nossa,A., Cavaleiro,A.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://scielo.pt/scielo.php?script=sci_arttext&pid=S0870-83122006000100004
Resumo: W-C-S films were deposited either by a reactive process in an Ar+CH4 atmosphere or by co-sputtering WS2 and C targets. The films were characterized concerning their chemical composition and mechanical properties. The results showed that the films, in both systems, have similar properties. Co-sputtered films are amorphous, whereas in the reactive process a gradual l oss of cristallinity is observed with the increase of C content in the films. The hardness and the adhesion are similar for both systems. The increase of C alloying to the films led to the improvement of both their hardness and adhesion. The tribological performance of the coatings was tested by ball-on-disk. The films deposited by co-sputtering present better results than the reactive deposited ones. With the increase of C content in these coatings an increase of the wear resistance is observed, reaching in the best case a wear coefficient of 3.1×10-16 m³/N×m. In the films deposited by reactive process, low wear coefficients can also be reached but no regular trend with increasing C contents can be observed.
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spelling Tribological behaviour of reactive and co-sputtered W-S-C coatingsTungsten disulfideWS2Friction coefficientWear coefficientSelf-lubricantW-C-S films were deposited either by a reactive process in an Ar+CH4 atmosphere or by co-sputtering WS2 and C targets. The films were characterized concerning their chemical composition and mechanical properties. The results showed that the films, in both systems, have similar properties. Co-sputtered films are amorphous, whereas in the reactive process a gradual l oss of cristallinity is observed with the increase of C content in the films. The hardness and the adhesion are similar for both systems. The increase of C alloying to the films led to the improvement of both their hardness and adhesion. The tribological performance of the coatings was tested by ball-on-disk. The films deposited by co-sputtering present better results than the reactive deposited ones. With the increase of C content in these coatings an increase of the wear resistance is observed, reaching in the best case a wear coefficient of 3.1×10-16 m³/N×m. In the films deposited by reactive process, low wear coefficients can also be reached but no regular trend with increasing C contents can be observed.Sociedade Portuguesa de Materiais2006-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articletext/htmlhttp://scielo.pt/scielo.php?script=sci_arttext&pid=S0870-83122006000100004Ciência & Tecnologia dos Materiais v.18 n.1-2 2006reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAPenghttp://scielo.pt/scielo.php?script=sci_arttext&pid=S0870-83122006000100004Evaristo,M.Nossa,A.Cavaleiro,A.info:eu-repo/semantics/openAccess2024-02-06T17:01:01Zoai:scielo:S0870-83122006000100004Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T02:16:39.694963Repositório 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 Tribological behaviour of reactive and co-sputtered W-S-C coatings
title Tribological behaviour of reactive and co-sputtered W-S-C coatings
spellingShingle Tribological behaviour of reactive and co-sputtered W-S-C coatings
Evaristo,M.
Tungsten disulfide
WS2
Friction coefficient
Wear coefficient
Self-lubricant
title_short Tribological behaviour of reactive and co-sputtered W-S-C coatings
title_full Tribological behaviour of reactive and co-sputtered W-S-C coatings
title_fullStr Tribological behaviour of reactive and co-sputtered W-S-C coatings
title_full_unstemmed Tribological behaviour of reactive and co-sputtered W-S-C coatings
title_sort Tribological behaviour of reactive and co-sputtered W-S-C coatings
author Evaristo,M.
author_facet Evaristo,M.
Nossa,A.
Cavaleiro,A.
author_role author
author2 Nossa,A.
Cavaleiro,A.
author2_role author
author
dc.contributor.author.fl_str_mv Evaristo,M.
Nossa,A.
Cavaleiro,A.
dc.subject.por.fl_str_mv Tungsten disulfide
WS2
Friction coefficient
Wear coefficient
Self-lubricant
topic Tungsten disulfide
WS2
Friction coefficient
Wear coefficient
Self-lubricant
description W-C-S films were deposited either by a reactive process in an Ar+CH4 atmosphere or by co-sputtering WS2 and C targets. The films were characterized concerning their chemical composition and mechanical properties. The results showed that the films, in both systems, have similar properties. Co-sputtered films are amorphous, whereas in the reactive process a gradual l oss of cristallinity is observed with the increase of C content in the films. The hardness and the adhesion are similar for both systems. The increase of C alloying to the films led to the improvement of both their hardness and adhesion. The tribological performance of the coatings was tested by ball-on-disk. The films deposited by co-sputtering present better results than the reactive deposited ones. With the increase of C content in these coatings an increase of the wear resistance is observed, reaching in the best case a wear coefficient of 3.1×10-16 m³/N×m. In the films deposited by reactive process, low wear coefficients can also be reached but no regular trend with increasing C contents can be observed.
publishDate 2006
dc.date.none.fl_str_mv 2006-01-01
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://scielo.pt/scielo.php?script=sci_arttext&pid=S0870-83122006000100004
url http://scielo.pt/scielo.php?script=sci_arttext&pid=S0870-83122006000100004
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv http://scielo.pt/scielo.php?script=sci_arttext&pid=S0870-83122006000100004
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 Sociedade Portuguesa de Materiais
publisher.none.fl_str_mv Sociedade Portuguesa de Materiais
dc.source.none.fl_str_mv Ciência & Tecnologia dos Materiais v.18 n.1-2 2006
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
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