Publication:
Electrochemical comparative study on corrosion behavior of conventional and powder metallurgy titanium alloys in physiological conditions

Simple item page
dc.affiliation.dptoUC3M. Departamento de Ciencia e Ingeniería de Materiales e Ingeniería Químicaes
dc.affiliation.grupoinvUC3M. Grupo de Investigación: Tecnología de Polvoses
dc.contributor.authorUreña Alcázar, Julia María
dc.contributor.authorGordo Odériz, Elena
dc.contributor.authorRuiz Navas, Elisa María
dc.contributor.authorVilaboa, N.
dc.contributor.authorSaldaña, L.
dc.contributor.authorJiménez Morales, Antonia
dc.date.accessioned2018-09-10T10:19:26Z
dc.date.available2019-04-01T22:00:05Z
dc.date.issued2017-03-01
dc.description.abstractThis article focuses on the electrochemical study of two titanium alloys employed in the manufacture of orthopedic implants – Ti-6Al-4V and Ti-6Al-7Nb – both of them obtained through powder metallurgy (PM). For comparative purposes, Ti-6Al-4V fabricated conventionally has also been investigated. Samples were immersed in a simulated body fluid (SBF) and incubated at 37 °C for different immersion time. Under these experimental conditions, we compared the influence of the processing method of alloys (PM or conventional) and their composition in the corrosion resistance. The corrosion resistance of these alloys in contact with SBF was evaluated with electrochemical impedance spectroscopy (EIS). The resulting impedance plots of all of them showed good reproducibility. For the lowest frequency tested (10 mHz) all of the samples showed high impedance modulus value approximately on the order of 106 Ω. This behavior is usually ascribed to a high corrosion protection performance. Although no significant differences in the evolution of the corrosion behavior for different immersion times has been found; the Ti-6Al-7Nb alloy processed by PM delivers a steady growth of corrosion resistance from day one until twelve weeks immersion. This sample showed the best performance between the two studied compositions. The resulting impedance plots show how powder metallurgy allows obtaining materials with similar or superior corrosion resistance in physiological conditions, than alloys obtained conventionally. Alloys characterization by scanning electron microscopy revealed no evidence of pitting corrosion phenomenon.en
dc.description.sponsorshipAuthors acknowledge funds provided by Spanish Government (programme MINECO, Ref. MAT2012-38650-C02-01) and regional government of Madrid (programme MULTIMAT-CHALLENGE, Ref. S2013/MIT-2862).en
dc.format.extent5
dc.format.mimetypeapplication/pdf
dc.identifier.bibliographicCitationMetal Powder Report, 72(2), 2017, pp. 118-123.en
dc.identifier.doihttps://doi.org/10.1016/j.mprp.2016.04.003
dc.identifier.issn0026-0657
dc.identifier.publicationfirstpage118es
dc.identifier.publicationissue2es
dc.identifier.publicationlastpage123es
dc.identifier.publicationtitleMetal Powder Reporten
dc.identifier.publicationvolume7es
dc.identifier.urihttps://hdl.handle.net/10016/27378
dc.identifier.uxxiAR/0000019283
dc.language.isoengen
dc.publisherElsevieren
dc.relation.ispartofhttp://hdl.handle.net/10016/27609
dc.relation.projectIDGobierno de España. MAT2012-38650-C02-01es
dc.relation.projectIDComunidad de Madrid. S2013/MIT-2862/MULTIMAT-CHALLENGE-CMes
dc.rights© 2016 Elsevier Ltd. All rights reserved.en
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 España*
dc.rights.accessRightsopen accessen
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/*
dc.subject.ecienciaMaterialeses
dc.subject.otherElectrochemistryen
dc.subject.otherCorrosionen
dc.subject.otherPowder metallurgyen
dc.subject.otherTitanium alloysen
dc.subject.otherElectrochemical impedance spectroscopyen
dc.subject.otherOrthopedic implantsen
dc.titleElectrochemical comparative study on corrosion behavior of conventional and powder metallurgy titanium alloys in physiological conditionsen
dc.typeresearch article*
dc.type.hasVersionAM*
dspace.entity.typePublication
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
electrochemical_MPR_2016_ps.pdf
Size:
658.76 KB
Format:
Adobe Portable Document Format
Download
Collections
DCIMIQ - CIMIQ - TP - Artículos de Revistas