Utilize este identificador para referenciar este registo: https://hdl.handle.net/1822/80012

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dc.contributor.authorGonçalves, Vinícius Richieri Mansopor
dc.contributor.authorÇaha, Ihsanpor
dc.contributor.authorAlves, Alexandra Manuela Vieira Cruz Pintopor
dc.contributor.authorToptan, Fatihpor
dc.contributor.authorRocha, Luís Augustopor
dc.date.accessioned2022-10-11T09:28:12Z-
dc.date.available2022-10-11T09:28:12Z-
dc.date.issued2022-05-26-
dc.identifier.citationGonçalves, 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/met12060908por
dc.identifier.urihttps://hdl.handle.net/1822/80012-
dc.description.abstractNovel 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.sponsorshipThis 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.isoengpor
dc.publisherMultidisciplinary Digital Publishing Institute (MDPI)por
dc.relationinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F04436%2F2020/PTpor
dc.rightsopenAccesspor
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/por
dc.subjectTi-based compositespor
dc.subjectNiobium carbidepor
dc.subjectPowder metallurgypor
dc.subjectTribocorrosionpor
dc.titleImproved tribocorrosion behavior obtained by in-situ precipitation of Ti2C in Ti-Nb alloypor
dc.typearticlepor
dc.peerreviewedyespor
dc.relation.publisherversionhttps://www.mdpi.com/2075-4701/12/6/908por
oaire.citationStartPage1por
oaire.citationEndPage17por
oaire.citationIssue6por
oaire.citationVolume12por
dc.date.updated2022-06-23T12:12:33Z-
dc.identifier.eissn2075-4701-
dc.identifier.doi10.3390/met12060908por
dc.subject.wosScience & Technologypor
sdum.journalMetalspor
oaire.versionVoRpor
dc.identifier.articlenumber908por
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