Effects of the high-temperature plasma immersion ion-implantation treatment on corrosion behavior of Ti-6Al1-4V

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dc.contributor.authorda Silva, Leide Lili G.
dc.contributor.authorUeda, Mario
dc.contributor.authorda Silva, Maria Margareth
dc.contributor.authorNorberto Codaro, Eduardo
dc.contributor.institutionInstituto Nacional de Pesquisas Espaciais (INPE)
dc.contributor.institutionInstituto Tecnológico de Aeronáutica (ITA)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T15:23:13Z
dc.date.available2014-05-20T15:23:13Z
dc.date.issued2006-08-01
dc.description.abstractNitrogen implantation into Ti alloys at higher temperatures improves their mechanical and corrosion resistance properties by forming a thicker nitride layer. In this paper, two different sets of Ti-6Al-4V samples were plasma immersion ion implantation (PIII)-treated using nitrogen plasma, varying the treatment time from 30 to 150 min (800 degrees C) and the process temperature from 400 degrees C to 800 degrees C (t = 60 min). Nanoindentation measurements of the PIII-treated samples at 800 C during 150 min showed the highest hardness value, 24 GPa, which is about four times bigger than untreated sample hardness. The N penetration at these conditions reached approximately 150 nm as analyzed by Auger spectroscopy. on the other hand, the lowest passive current density (3 x 10(-7) A. cm(-2)) was obtained for a PIII-treated sample during 30 min at higher temperature (800 degrees C). The corrosion resistance of this sample is almost the same as for the untreated specimen. Corrosion behavior evidenced that in strong oxidizing media, all PIII-treated samples are more corrosion resistant than the untreated one. PIII processing at higher temperatures promotes smoothing of the sample surface as observed by scanning electron microscopy (SEM). Grazing incidence X-ray diffraction analyses of the untreated samples identified the two typical Ti phases, Ti alpha and Ti beta. After the implantation, Ti2N and TiO2 phases were also detected.en
dc.description.affiliationNatl Inst Space Res, Associated Plasma Lab, INPE, BR-12227010 São Paulo, Brazil
dc.description.affiliationTechnol Inst Aeronaut, Dept Mech Engn, BR-12228900 São Paulo, Brazil
dc.description.affiliationSão Paulo State Univ, Dept Phys & Chem, BR-12516410 Guaratingueta, SP, Brazil
dc.description.affiliationUnespSão Paulo State Univ, Dept Phys & Chem, BR-12516410 Guaratingueta, SP, Brazil
dc.format.extent1141-1147
dc.identifierhttp://dx.doi.org/10.1109/TPS.2006.878391
dc.identifier.citationIEEE Transactions on Plasma Science. Piscataway: IEEE-Inst Electrical Electronics Engineers Inc., v. 34, n. 4, p. 1141-1147, 2006.
dc.identifier.doi10.1109/TPS.2006.878391
dc.identifier.issn0093-3813
dc.identifier.lattes7539097260489375
dc.identifier.urihttp://hdl.handle.net/11449/34050
dc.identifier.wosWOS:000239975900017
dc.language.isoeng
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)
dc.relation.ispartofIEEE Transactions on Plasma Science
dc.relation.ispartofjcr1.253
dc.relation.ispartofsjr0,522
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectcorrosionpt
dc.subjecthardness measurementpt
dc.subjection implantationpt
dc.subjecttitanium alloyspt
dc.titleEffects of the high-temperature plasma immersion ion-implantation treatment on corrosion behavior of Ti-6Al1-4Ven
dc.typeArtigo
dcterms.licensehttp://www.ieee.org/publications_standards/publications/rights/rights_policies.html
dcterms.rightsHolderIEEE-Inst Electrical Electronics Engineers Inc
unesp.author.lattes7539097260489375
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Engenharia, Guaratinguetápt

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