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https://hdl.handle.net/1822/80012
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Campo DC | Valor | Idioma |
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dc.contributor.author | Gonçalves, Vinícius Richieri Manso | por |
dc.contributor.author | Çaha, Ihsan | por |
dc.contributor.author | Alves, Alexandra Manuela Vieira Cruz Pinto | por |
dc.contributor.author | Toptan, Fatih | por |
dc.contributor.author | Rocha, Luís Augusto | por |
dc.date.accessioned | 2022-10-11T09:28:12Z | - |
dc.date.available | 2022-10-11T09:28:12Z | - |
dc.date.issued | 2022-05-26 | - |
dc.identifier.citation | 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 | por |
dc.identifier.uri | https://hdl.handle.net/1822/80012 | - |
dc.description.abstract | 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. | por |
dc.description.sponsorship | 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. | por |
dc.language.iso | eng | por |
dc.publisher | Multidisciplinary Digital Publishing Institute (MDPI) | por |
dc.relation | info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F04436%2F2020/PT | por |
dc.rights | openAccess | por |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | por |
dc.subject | Ti-based composites | por |
dc.subject | Niobium carbide | por |
dc.subject | Powder metallurgy | por |
dc.subject | Tribocorrosion | por |
dc.title | Improved tribocorrosion behavior obtained by in-situ precipitation of Ti2C in Ti-Nb alloy | por |
dc.type | article | por |
dc.peerreviewed | yes | por |
dc.relation.publisherversion | https://www.mdpi.com/2075-4701/12/6/908 | por |
oaire.citationStartPage | 1 | por |
oaire.citationEndPage | 17 | por |
oaire.citationIssue | 6 | por |
oaire.citationVolume | 12 | por |
dc.date.updated | 2022-06-23T12:12:33Z | - |
dc.identifier.eissn | 2075-4701 | - |
dc.identifier.doi | 10.3390/met12060908 | por |
dc.subject.wos | Science & Technology | por |
sdum.journal | Metals | por |
oaire.version | VoR | por |
dc.identifier.articlenumber | 908 | por |
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metals-12-00908-v2.pdf | 4,97 MB | Adobe PDF | Ver/Abrir |
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