Elastic properties of (Ti,Al,Si)N nanocomposite films
Autor(a) principal: | |
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Data de Publicação: | 2001 |
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/10316/4292 https://doi.org/10.1016/S0257-8972(01)01242-7 |
Resumo: | (Ti,Al,Si)N films have been prepared by d.c. and rf reactive magnetron sputtering, with Si contents in the range 2-11 at.% and Al contents between 4 and 19 at.%. Samples prepared in rotation mode (three magnetrons) presented densities between 4.0 and 4.6 g/cm3, while samples prepared in static mode (magnetron with Ti target with small pieces of Si and Al) displayed densities mainly in the range 3.0-3.9 g/cm3. For comparison purposes, the evaluation of Young's modulus was performed by both depth-sensing indentation and surface acoustic wave (SAW) techniques. Indentation results revealed systematically higher values than those obtained by SAW. These discrepancies might be related with the relatively low density of the films. Hardness values of approximately 60 GPa were obtained with samples with a composition of approximately 28.5 at.% titanium, 12 at.% aluminium, 9.5 at.% silicon and 50 at.% nitrogen. XRD patterns showed the presence of two different crystalline phases, as in the case of (Ti,Si)N films. One is assigned to TiN phase (lattice parameter of approx. 0.429 nm) and the second, the so-called solid solution which is developed in situations of low surface mobility, revealed a lattice parameter (0.419 nm) slightly lower than that of bulk TiN. |
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Elastic properties of (Ti,Al,Si)N nanocomposite filmsSuperhard coatingsYoung's modulusTi-Al-Si-NElastic modulus(Ti,Al,Si)N films have been prepared by d.c. and rf reactive magnetron sputtering, with Si contents in the range 2-11 at.% and Al contents between 4 and 19 at.%. Samples prepared in rotation mode (three magnetrons) presented densities between 4.0 and 4.6 g/cm3, while samples prepared in static mode (magnetron with Ti target with small pieces of Si and Al) displayed densities mainly in the range 3.0-3.9 g/cm3. For comparison purposes, the evaluation of Young's modulus was performed by both depth-sensing indentation and surface acoustic wave (SAW) techniques. Indentation results revealed systematically higher values than those obtained by SAW. These discrepancies might be related with the relatively low density of the films. Hardness values of approximately 60 GPa were obtained with samples with a composition of approximately 28.5 at.% titanium, 12 at.% aluminium, 9.5 at.% silicon and 50 at.% nitrogen. XRD patterns showed the presence of two different crystalline phases, as in the case of (Ti,Si)N films. One is assigned to TiN phase (lattice parameter of approx. 0.429 nm) and the second, the so-called solid solution which is developed in situations of low surface mobility, revealed a lattice parameter (0.419 nm) slightly lower than that of bulk TiN.http://www.sciencedirect.com/science/article/B6TVV-43WTXCV-N/1/19b034221f9e7e8378dbcc26ff46ca102001info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleaplication/PDFhttp://hdl.handle.net/10316/4292http://hdl.handle.net/10316/4292https://doi.org/10.1016/S0257-8972(01)01242-7engSurface and Coatings Technology. 142-144:(2001) 110-116Carvalho, S.Vaz, F.Rebouta, L.Schneider, D.Cavaleiro, A.Alves, E.info: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:RCAAP2021-08-18T09:22:53Zoai:estudogeral.uc.pt:10316/4292Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T20:58:29.401317Repositório 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 |
Elastic properties of (Ti,Al,Si)N nanocomposite films |
title |
Elastic properties of (Ti,Al,Si)N nanocomposite films |
spellingShingle |
Elastic properties of (Ti,Al,Si)N nanocomposite films Carvalho, S. Superhard coatings Young's modulus Ti-Al-Si-N Elastic modulus |
title_short |
Elastic properties of (Ti,Al,Si)N nanocomposite films |
title_full |
Elastic properties of (Ti,Al,Si)N nanocomposite films |
title_fullStr |
Elastic properties of (Ti,Al,Si)N nanocomposite films |
title_full_unstemmed |
Elastic properties of (Ti,Al,Si)N nanocomposite films |
title_sort |
Elastic properties of (Ti,Al,Si)N nanocomposite films |
author |
Carvalho, S. |
author_facet |
Carvalho, S. Vaz, F. Rebouta, L. Schneider, D. Cavaleiro, A. Alves, E. |
author_role |
author |
author2 |
Vaz, F. Rebouta, L. Schneider, D. Cavaleiro, A. Alves, E. |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Carvalho, S. Vaz, F. Rebouta, L. Schneider, D. Cavaleiro, A. Alves, E. |
dc.subject.por.fl_str_mv |
Superhard coatings Young's modulus Ti-Al-Si-N Elastic modulus |
topic |
Superhard coatings Young's modulus Ti-Al-Si-N Elastic modulus |
description |
(Ti,Al,Si)N films have been prepared by d.c. and rf reactive magnetron sputtering, with Si contents in the range 2-11 at.% and Al contents between 4 and 19 at.%. Samples prepared in rotation mode (three magnetrons) presented densities between 4.0 and 4.6 g/cm3, while samples prepared in static mode (magnetron with Ti target with small pieces of Si and Al) displayed densities mainly in the range 3.0-3.9 g/cm3. For comparison purposes, the evaluation of Young's modulus was performed by both depth-sensing indentation and surface acoustic wave (SAW) techniques. Indentation results revealed systematically higher values than those obtained by SAW. These discrepancies might be related with the relatively low density of the films. Hardness values of approximately 60 GPa were obtained with samples with a composition of approximately 28.5 at.% titanium, 12 at.% aluminium, 9.5 at.% silicon and 50 at.% nitrogen. XRD patterns showed the presence of two different crystalline phases, as in the case of (Ti,Si)N films. One is assigned to TiN phase (lattice parameter of approx. 0.429 nm) and the second, the so-called solid solution which is developed in situations of low surface mobility, revealed a lattice parameter (0.419 nm) slightly lower than that of bulk TiN. |
publishDate |
2001 |
dc.date.none.fl_str_mv |
2001 |
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/10316/4292 http://hdl.handle.net/10316/4292 https://doi.org/10.1016/S0257-8972(01)01242-7 |
url |
http://hdl.handle.net/10316/4292 https://doi.org/10.1016/S0257-8972(01)01242-7 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Surface and Coatings Technology. 142-144:(2001) 110-116 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
aplication/PDF |
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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 |
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RCAAP |
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RCAAP |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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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 |
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1799133875910213632 |