Surface Corrosion of Ti-16Si-4B Powder Alloy Implanted With Nitrogen by Plasma-Based Technique

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dc.contributor.authorFernandes, Bruno Bacci
dc.contributor.authorUeda, Mario
dc.contributor.authorSavonov, Graziela da Silva
dc.contributor.authorde Moura Neto, Carlos
dc.contributor.authorRamos, Alfeu Saraiva [UNESP]
dc.contributor.institutionInstituto Nacional de Pesquisas Espaciais (INPE)
dc.contributor.institutionInstituto Tecnológico de Aeronáutica (ITA)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T13:28:24Z
dc.date.available2014-05-20T13:28:24Z
dc.date.issued2011-11-01
dc.description.abstractTitanium materials with a new ternary phase, Ti(6)Si(2)B, can be manufactured by high-energy ball milling and further sintering of titanium, silicon, and boron powders. In this paper, hot pressing was chosen to compact the granules and then prevent high porosity and grain coarsening during sintering. Subsequently, the surface of the Ti-16Si-4B (at.%) alloy was modified by nitrogen ion implantation using a plasma immersion technique. The marine corrosion behavior of this powder alloy was studied in this paper. Scanning electron microscopy and X-ray diffraction analyses were performed on the powders and alloys in order to observe phase compositions and morphologies. The morphology of sample surfaces was also observed by utilizing an atomic force microscope. The concentration profile of the detected elements has been investigated using Auger electron spectroscopy depth profiling. The results show that a shallow nitrogen-rich layer was obtained after implantation treatment. Potentiodynamic analyses showed that, with the nitrogen insertion, there is a significant reduction of the anodic current in almost the whole potential spam explored, meaning that the corrosion rate decreases when ion implantation is performed.en
dc.description.affiliationNatl Inst Space Res INPE, BR-12227010 Sao Jose Dos Campos, Brazil
dc.description.affiliationTechnol Inst Aeronaut ITA, Dept Mech Engn, BR-12228900 Sao Jose Dos Campos, Brazil
dc.description.affiliationSão Paulo State Univ UNESP, Dept Mat, BR-12516410 Guaratingueta, Brazil
dc.description.affiliationUnespSão Paulo State Univ UNESP, Dept Mat, BR-12516410 Guaratingueta, Brazil
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.format.extent3061-3066
dc.identifierhttp://dx.doi.org/10.1109/TPS.2011.2159031
dc.identifier.citationIEEE Transactions on Plasma Science. Piscataway: IEEE-Inst Electrical Electronics Engineers Inc, v. 39, n. 11, p. 3061-3066, 2011.
dc.identifier.doi10.1109/TPS.2011.2159031
dc.identifier.issn0093-3813
dc.identifier.urihttp://hdl.handle.net/11449/9451
dc.identifier.wosWOS:000298078500007
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.subjectCorrosionen
dc.subjectplasma applicationsen
dc.subjectsurface treatmenten
dc.subjecttitanium alloysen
dc.titleSurface Corrosion of Ti-16Si-4B Powder Alloy Implanted With Nitrogen by Plasma-Based Techniqueen
dc.typeArtigo
dcterms.licensehttp://www.ieee.org/publications_standards/publications/rights/rights_policies.html
dcterms.rightsHolderIEEE-Inst Electrical Electronics Engineers Inc

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