Influence of Ag alloying on the morphology, structure, mechanical properties, thermal stability and oxidation resistance of multilayered TiSiN/Ti(Ag)N films
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/10316/101255 https://doi.org/10.1016/j.matdes.2020.108703 |
Resumo: | Self-lubricant films combine the intrinsic properties of high oxidation resistance coatings with lubricious elements deposited as monolayer and/or multilayered configuration, offering an opportunity to design green coating materials. The present paper reports the influence of Ag additions (range 0–3.2 at.%), considered as low friction material, on the morphology, structure, mechanical properties, thermal stability and oxidation resistance of multilayered TiSiN/TiN(Ag) films deposited by sputtering. The surface morphology of the coatings progressively changed from a well-defined cauliflower structure to a tetrahedral and pyramid-like structure and the cross-section morphology became more compact with Ag incorporation. A decrease of coating's hardness and Young's modulus was observed with Ag additions, due to the incorporation of the soft silver on the structure. The coatings showed excellent thermal stability and revealed a good control to the Ag diffusion towards the surface in protective atmosphere. Ag additions did not affect the onset oxidation point of films. However, the oxidation resistance of the films was reduced with Ag inclusion, due to its additional transportation during the oxidation process, promoting additional paths for ions diffusion, giving rise to a less protective Ti-Si-O layer and contributing to the formation of big crystals of rutile on the top. |
id |
RCAP_35c4c4caa2fc8dab79d567f8f9d7e545 |
---|---|
oai_identifier_str |
oai:estudogeral.uc.pt:10316/101255 |
network_acronym_str |
RCAP |
network_name_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository_id_str |
7160 |
spelling |
Influence of Ag alloying on the morphology, structure, mechanical properties, thermal stability and oxidation resistance of multilayered TiSiN/Ti(Ag)N filmsTiSiN/Ti(Ag)N filmsStructureThermal stabilityOxidation resistanceSelf-lubricant films combine the intrinsic properties of high oxidation resistance coatings with lubricious elements deposited as monolayer and/or multilayered configuration, offering an opportunity to design green coating materials. The present paper reports the influence of Ag additions (range 0–3.2 at.%), considered as low friction material, on the morphology, structure, mechanical properties, thermal stability and oxidation resistance of multilayered TiSiN/TiN(Ag) films deposited by sputtering. The surface morphology of the coatings progressively changed from a well-defined cauliflower structure to a tetrahedral and pyramid-like structure and the cross-section morphology became more compact with Ag incorporation. A decrease of coating's hardness and Young's modulus was observed with Ag additions, due to the incorporation of the soft silver on the structure. The coatings showed excellent thermal stability and revealed a good control to the Ag diffusion towards the surface in protective atmosphere. Ag additions did not affect the onset oxidation point of films. However, the oxidation resistance of the films was reduced with Ag inclusion, due to its additional transportation during the oxidation process, promoting additional paths for ions diffusion, giving rise to a less protective Ti-Si-O layer and contributing to the formation of big crystals of rutile on the top.2020info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10316/101255http://hdl.handle.net/10316/101255https://doi.org/10.1016/j.matdes.2020.108703eng02641275Al-Rjoub, A.Cavaleiro, A.Fernandes, F.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:RCAAP2022-08-18T20:43:31Zoai:estudogeral.uc.pt:10316/101255Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T21:18:29.332054Repositório 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 Ag alloying on the morphology, structure, mechanical properties, thermal stability and oxidation resistance of multilayered TiSiN/Ti(Ag)N films |
title |
Influence of Ag alloying on the morphology, structure, mechanical properties, thermal stability and oxidation resistance of multilayered TiSiN/Ti(Ag)N films |
spellingShingle |
Influence of Ag alloying on the morphology, structure, mechanical properties, thermal stability and oxidation resistance of multilayered TiSiN/Ti(Ag)N films Al-Rjoub, A. TiSiN/Ti(Ag)N films Structure Thermal stability Oxidation resistance |
title_short |
Influence of Ag alloying on the morphology, structure, mechanical properties, thermal stability and oxidation resistance of multilayered TiSiN/Ti(Ag)N films |
title_full |
Influence of Ag alloying on the morphology, structure, mechanical properties, thermal stability and oxidation resistance of multilayered TiSiN/Ti(Ag)N films |
title_fullStr |
Influence of Ag alloying on the morphology, structure, mechanical properties, thermal stability and oxidation resistance of multilayered TiSiN/Ti(Ag)N films |
title_full_unstemmed |
Influence of Ag alloying on the morphology, structure, mechanical properties, thermal stability and oxidation resistance of multilayered TiSiN/Ti(Ag)N films |
title_sort |
Influence of Ag alloying on the morphology, structure, mechanical properties, thermal stability and oxidation resistance of multilayered TiSiN/Ti(Ag)N films |
author |
Al-Rjoub, A. |
author_facet |
Al-Rjoub, A. Cavaleiro, A. Fernandes, F. |
author_role |
author |
author2 |
Cavaleiro, A. Fernandes, F. |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Al-Rjoub, A. Cavaleiro, A. Fernandes, F. |
dc.subject.por.fl_str_mv |
TiSiN/Ti(Ag)N films Structure Thermal stability Oxidation resistance |
topic |
TiSiN/Ti(Ag)N films Structure Thermal stability Oxidation resistance |
description |
Self-lubricant films combine the intrinsic properties of high oxidation resistance coatings with lubricious elements deposited as monolayer and/or multilayered configuration, offering an opportunity to design green coating materials. The present paper reports the influence of Ag additions (range 0–3.2 at.%), considered as low friction material, on the morphology, structure, mechanical properties, thermal stability and oxidation resistance of multilayered TiSiN/TiN(Ag) films deposited by sputtering. The surface morphology of the coatings progressively changed from a well-defined cauliflower structure to a tetrahedral and pyramid-like structure and the cross-section morphology became more compact with Ag incorporation. A decrease of coating's hardness and Young's modulus was observed with Ag additions, due to the incorporation of the soft silver on the structure. The coatings showed excellent thermal stability and revealed a good control to the Ag diffusion towards the surface in protective atmosphere. Ag additions did not affect the onset oxidation point of films. However, the oxidation resistance of the films was reduced with Ag inclusion, due to its additional transportation during the oxidation process, promoting additional paths for ions diffusion, giving rise to a less protective Ti-Si-O layer and contributing to the formation of big crystals of rutile on the top. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020 |
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/10316/101255 http://hdl.handle.net/10316/101255 https://doi.org/10.1016/j.matdes.2020.108703 |
url |
http://hdl.handle.net/10316/101255 https://doi.org/10.1016/j.matdes.2020.108703 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
02641275 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
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_ |
1799134079678939136 |