Improved tribocorrosion behavior obtained by in-situ precipitation of Ti2C in Ti-Nb alloy

Detalhes bibliográficos
Autor(a) principal: Gonçalves, Vinícius Richieri Manso
Data de Publicação: 2022
Outros Autores: Çaha, Ihsan, Alves, Alexandra Manuela Vieira Cruz Pinto, Toptan, Fatih, Rocha, Luís Augusto
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: https://hdl.handle.net/1822/80012
Resumo: Novel in-situ Ti-based matrix composites (TMCs) were developed through the reactive hot pressing of Ti + NbC powder blends. Due to the chemical reaction that occurred in the solid-state during processing, the produced samples were composed of an Nb-rich β-Ti phase that formed a metallic matrix along with Ti<sub>2</sub>C as a reinforcing phase. By employing different proportions of Ti:NbC, the phase composition of the alloys was designed to contain different ratios of α-Ti and β-Ti. The present work investigated the corrosion and tribocorrosion behavior of the composites, compared to unreinforced Ti, in a phosphate-buffered solution (PBS) at body temperature. Corrosion tests included potentiodynamic polarization and electrochemical impedance spectroscopy (EIS). Tribocorrosion tests were carried out using a ball-on-plate tribometer with sliding performed at open circuit potential (OCP) and under anodic potentiostatic conditions. Results showed that the stabilization of the β phase in the matrix led to a decrease in the hardness. However, the formation of the in-situ reinforcing phase significantly improved the tribocorrosion behavior of the composites due to a load-carrying effect, lowering the corrosion tendency and kinetics under sliding. Furthermore, localized corrosion was not observed at the interface between the reinforcing phase and the matrix.
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spelling Improved tribocorrosion behavior obtained by in-situ precipitation of Ti2C in Ti-Nb alloyTi-based compositesNiobium carbidePowder metallurgyTribocorrosionScience & TechnologyNovel in-situ Ti-based matrix composites (TMCs) were developed through the reactive hot pressing of Ti + NbC powder blends. Due to the chemical reaction that occurred in the solid-state during processing, the produced samples were composed of an Nb-rich β-Ti phase that formed a metallic matrix along with Ti<sub>2</sub>C as a reinforcing phase. By employing different proportions of Ti:NbC, the phase composition of the alloys was designed to contain different ratios of α-Ti and β-Ti. The present work investigated the corrosion and tribocorrosion behavior of the composites, compared to unreinforced Ti, in a phosphate-buffered solution (PBS) at body temperature. Corrosion tests included potentiodynamic polarization and electrochemical impedance spectroscopy (EIS). Tribocorrosion tests were carried out using a ball-on-plate tribometer with sliding performed at open circuit potential (OCP) and under anodic potentiostatic conditions. Results showed that the stabilization of the β phase in the matrix led to a decrease in the hardness. However, the formation of the in-situ reinforcing phase significantly improved the tribocorrosion behavior of the composites due to a load-carrying effect, lowering the corrosion tendency and kinetics under sliding. Furthermore, localized corrosion was not observed at the interface between the reinforcing phase and the matrix.This work was supported by São Paulo Research Foundation (FAPESP), grants #2017/24300-4, #2018/00746-6 and #2019/07953-0. Also, this work was partially supported by Portuguese Foundation for Science and Technology (FCT), Portugal, under UIDB/04436/2020 project.Multidisciplinary Digital Publishing Institute (MDPI)Universidade do MinhoGonçalves, Vinícius Richieri MansoÇaha, IhsanAlves, Alexandra Manuela Vieira Cruz PintoToptan, FatihRocha, Luís Augusto2022-05-262022-05-26T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/1822/80012engGonçalves, V.R.M.; Çaha, I.; Alves, A.C.; Toptan, F.; Rocha, L.A. Improved Tribocorrosion Behavior Obtained by In-Situ Precipitation of Ti2C in Ti-Nb Alloy. Metals 2022, 12, 908. https://doi.org/10.3390/met120609082075-470110.3390/met12060908908https://www.mdpi.com/2075-4701/12/6/908info: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:RCAAP2023-07-21T12:46:13Zoai:repositorium.sdum.uminho.pt:1822/80012Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:44:11.508517Repositório 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 Improved tribocorrosion behavior obtained by in-situ precipitation of Ti2C in Ti-Nb alloy
title Improved tribocorrosion behavior obtained by in-situ precipitation of Ti2C in Ti-Nb alloy
spellingShingle Improved tribocorrosion behavior obtained by in-situ precipitation of Ti2C in Ti-Nb alloy
Gonçalves, Vinícius Richieri Manso
Ti-based composites
Niobium carbide
Powder metallurgy
Tribocorrosion
Science & Technology
title_short Improved tribocorrosion behavior obtained by in-situ precipitation of Ti2C in Ti-Nb alloy
title_full Improved tribocorrosion behavior obtained by in-situ precipitation of Ti2C in Ti-Nb alloy
title_fullStr Improved tribocorrosion behavior obtained by in-situ precipitation of Ti2C in Ti-Nb alloy
title_full_unstemmed Improved tribocorrosion behavior obtained by in-situ precipitation of Ti2C in Ti-Nb alloy
title_sort Improved tribocorrosion behavior obtained by in-situ precipitation of Ti2C in Ti-Nb alloy
author Gonçalves, Vinícius Richieri Manso
author_facet Gonçalves, Vinícius Richieri Manso
Çaha, Ihsan
Alves, Alexandra Manuela Vieira Cruz Pinto
Toptan, Fatih
Rocha, Luís Augusto
author_role author
author2 Çaha, Ihsan
Alves, Alexandra Manuela Vieira Cruz Pinto
Toptan, Fatih
Rocha, Luís Augusto
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Universidade do Minho
dc.contributor.author.fl_str_mv Gonçalves, Vinícius Richieri Manso
Çaha, Ihsan
Alves, Alexandra Manuela Vieira Cruz Pinto
Toptan, Fatih
Rocha, Luís Augusto
dc.subject.por.fl_str_mv Ti-based composites
Niobium carbide
Powder metallurgy
Tribocorrosion
Science & Technology
topic Ti-based composites
Niobium carbide
Powder metallurgy
Tribocorrosion
Science & Technology
description Novel in-situ Ti-based matrix composites (TMCs) were developed through the reactive hot pressing of Ti + NbC powder blends. Due to the chemical reaction that occurred in the solid-state during processing, the produced samples were composed of an Nb-rich β-Ti phase that formed a metallic matrix along with Ti<sub>2</sub>C as a reinforcing phase. By employing different proportions of Ti:NbC, the phase composition of the alloys was designed to contain different ratios of α-Ti and β-Ti. The present work investigated the corrosion and tribocorrosion behavior of the composites, compared to unreinforced Ti, in a phosphate-buffered solution (PBS) at body temperature. Corrosion tests included potentiodynamic polarization and electrochemical impedance spectroscopy (EIS). Tribocorrosion tests were carried out using a ball-on-plate tribometer with sliding performed at open circuit potential (OCP) and under anodic potentiostatic conditions. Results showed that the stabilization of the β phase in the matrix led to a decrease in the hardness. However, the formation of the in-situ reinforcing phase significantly improved the tribocorrosion behavior of the composites due to a load-carrying effect, lowering the corrosion tendency and kinetics under sliding. Furthermore, localized corrosion was not observed at the interface between the reinforcing phase and the matrix.
publishDate 2022
dc.date.none.fl_str_mv 2022-05-26
2022-05-26T00:00:00Z
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 https://hdl.handle.net/1822/80012
url https://hdl.handle.net/1822/80012
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Gonçalves, V.R.M.; Çaha, I.; Alves, A.C.; Toptan, F.; Rocha, L.A. Improved Tribocorrosion Behavior Obtained by In-Situ Precipitation of Ti2C in Ti-Nb Alloy. Metals 2022, 12, 908. https://doi.org/10.3390/met12060908
2075-4701
10.3390/met12060908
908
https://www.mdpi.com/2075-4701/12/6/908
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 Multidisciplinary Digital Publishing Institute (MDPI)
publisher.none.fl_str_mv Multidisciplinary Digital Publishing Institute (MDPI)
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
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