The role of interfaces and morphology on silver diffusion in hard coatings
Autor(a) principal: | |
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Data de Publicação: | 2023 |
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/10400.22/24576 |
Resumo: | One of the main approaches to increase the tool lifetime during dry machining of “hard-to-machine” aerospace alloys is self-lubrication by the incorporation of noble metals in hard matrixes with good mechanical and diffusion barrier properties. In this paper, the diffusion of an Ag-rich layer sandwiched between two layers of either TiN or TiSiN is studied by transmission electron microscopy and in situ Rutherford backscattering spectrometry. The layer stacks were subjected to annealing treatments at 600 ◦C and 800 ◦C for 2 hours. Three processes were found to control the diffusion of silver: the morphology of the “sandwich” layers, the formation of small voids in the involved interfaces and the sublimation of Ag in the surface at temperatures near the melting point. The study revealed that the dense TiSiN matrix allowed a significantly better control of Ag diffusion than the more open TiN matrix. |
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The role of interfaces and morphology on silver diffusion in hard coatingsTiN and TiSiN layer stacksAg diffusion, StructureMorphologyOne of the main approaches to increase the tool lifetime during dry machining of “hard-to-machine” aerospace alloys is self-lubrication by the incorporation of noble metals in hard matrixes with good mechanical and diffusion barrier properties. In this paper, the diffusion of an Ag-rich layer sandwiched between two layers of either TiN or TiSiN is studied by transmission electron microscopy and in situ Rutherford backscattering spectrometry. The layer stacks were subjected to annealing treatments at 600 ◦C and 800 ◦C for 2 hours. Three processes were found to control the diffusion of silver: the morphology of the “sandwich” layers, the formation of small voids in the involved interfaces and the sublimation of Ag in the surface at temperatures near the melting point. The study revealed that the dense TiSiN matrix allowed a significantly better control of Ag diffusion than the more open TiN matrix.Elsevier B.V.Repositório Científico do Instituto Politécnico do PortoCavaleiro, D.Munnik, F.Krause, M.Carbo-Argibay, E.Ferreira, P.J.Cavaleiro, A.Fernandes, F.2024-01-19T12:33:17Z2023-07-142023-07-14T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.22/24576eng10.1016/j.surfin.2023.103182info: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:RCAAP2024-01-24T01:50:44Zoai:recipp.ipp.pt:10400.22/24576Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T01:56:45.739088Repositório 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 |
The role of interfaces and morphology on silver diffusion in hard coatings |
title |
The role of interfaces and morphology on silver diffusion in hard coatings |
spellingShingle |
The role of interfaces and morphology on silver diffusion in hard coatings Cavaleiro, D. TiN and TiSiN layer stacks Ag diffusion, Structure Morphology |
title_short |
The role of interfaces and morphology on silver diffusion in hard coatings |
title_full |
The role of interfaces and morphology on silver diffusion in hard coatings |
title_fullStr |
The role of interfaces and morphology on silver diffusion in hard coatings |
title_full_unstemmed |
The role of interfaces and morphology on silver diffusion in hard coatings |
title_sort |
The role of interfaces and morphology on silver diffusion in hard coatings |
author |
Cavaleiro, D. |
author_facet |
Cavaleiro, D. Munnik, F. Krause, M. Carbo-Argibay, E. Ferreira, P.J. Cavaleiro, A. Fernandes, F. |
author_role |
author |
author2 |
Munnik, F. Krause, M. Carbo-Argibay, E. Ferreira, P.J. Cavaleiro, A. Fernandes, F. |
author2_role |
author author author author author author |
dc.contributor.none.fl_str_mv |
Repositório Científico do Instituto Politécnico do Porto |
dc.contributor.author.fl_str_mv |
Cavaleiro, D. Munnik, F. Krause, M. Carbo-Argibay, E. Ferreira, P.J. Cavaleiro, A. Fernandes, F. |
dc.subject.por.fl_str_mv |
TiN and TiSiN layer stacks Ag diffusion, Structure Morphology |
topic |
TiN and TiSiN layer stacks Ag diffusion, Structure Morphology |
description |
One of the main approaches to increase the tool lifetime during dry machining of “hard-to-machine” aerospace alloys is self-lubrication by the incorporation of noble metals in hard matrixes with good mechanical and diffusion barrier properties. In this paper, the diffusion of an Ag-rich layer sandwiched between two layers of either TiN or TiSiN is studied by transmission electron microscopy and in situ Rutherford backscattering spectrometry. The layer stacks were subjected to annealing treatments at 600 ◦C and 800 ◦C for 2 hours. Three processes were found to control the diffusion of silver: the morphology of the “sandwich” layers, the formation of small voids in the involved interfaces and the sublimation of Ag in the surface at temperatures near the melting point. The study revealed that the dense TiSiN matrix allowed a significantly better control of Ag diffusion than the more open TiN matrix. |
publishDate |
2023 |
dc.date.none.fl_str_mv |
2023-07-14 2023-07-14T00:00:00Z 2024-01-19T12:33:17Z |
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/10400.22/24576 |
url |
http://hdl.handle.net/10400.22/24576 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1016/j.surfin.2023.103182 |
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 B.V. |
publisher.none.fl_str_mv |
Elsevier B.V. |
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 |
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1799137055511412736 |