Electrochemical behavior of Ti and Ti6Al4V in aqueous solutions of citric acid containing halides

Detalhes bibliográficos
Autor(a) principal: Schmidt, Anelise Marlene
Data de Publicação: 2006
Outros Autores: Azambuja, Denise Schermann
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFRGS
Texto Completo: http://hdl.handle.net/10183/20364
Resumo: This paper reports on an investigation of the electrochemical behavior of Ti grade 2 and Ti6Al4V alloy in aqueous citric acid solutions with pH 2.0 containing halide ions. Voltammetric studies of Ti and the alloy in citric acid, with and without chloride ions, indicate that the Ti and Ti alloy presented a passive behavior in the test solutions used. Pitting was observed at 3.0 and 2.5 V/SCE for Ti and Ti6Al4V, respectively, when bromide ions were added to the solution. In solutions containing fluoride ions, dissolution of the film occurred at potentials close to - 1.0 V/SCE in both electrodes. The iodide ions oxidized on the passive oxide film at potentials close to 1.0 V/SCE. EIS results of the materials in citric acid solutions containing chloride ions revealed that the film’s resistance increased as the applied potential rose from 0 to 1.0 V. In bromide-containing solutions, breakdown of the film was confirmed at potentials above 2.0 V/SCE in both electrodes. These results suggest film reformation for Ti and the alloy in solutions containing fluoride at potentials within the passive region.
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spelling Schmidt, Anelise MarleneAzambuja, Denise Schermann2010-04-16T09:14:17Z20061516-1439http://hdl.handle.net/10183/20364000595580This paper reports on an investigation of the electrochemical behavior of Ti grade 2 and Ti6Al4V alloy in aqueous citric acid solutions with pH 2.0 containing halide ions. Voltammetric studies of Ti and the alloy in citric acid, with and without chloride ions, indicate that the Ti and Ti alloy presented a passive behavior in the test solutions used. Pitting was observed at 3.0 and 2.5 V/SCE for Ti and Ti6Al4V, respectively, when bromide ions were added to the solution. In solutions containing fluoride ions, dissolution of the film occurred at potentials close to - 1.0 V/SCE in both electrodes. The iodide ions oxidized on the passive oxide film at potentials close to 1.0 V/SCE. EIS results of the materials in citric acid solutions containing chloride ions revealed that the film’s resistance increased as the applied potential rose from 0 to 1.0 V. In bromide-containing solutions, breakdown of the film was confirmed at potentials above 2.0 V/SCE in both electrodes. These results suggest film reformation for Ti and the alloy in solutions containing fluoride at potentials within the passive region.application/pdfengMaterials research : ibero-american journal of materials. São Carlos, SP. Vol. 9, n. 4 (out./dez. 2006), p. 387-392EletroquímicaTiTi6Al4VCitric acidHalide ionsElectrochemical behavior of Ti and Ti6Al4V in aqueous solutions of citric acid containing halidesinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/otherinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSORIGINAL000595580.pdf000595580.pdfTexto completo (inglês)application/pdf819160http://www.lume.ufrgs.br/bitstream/10183/20364/1/000595580.pdf958bf05c660e2f81a039763c8a107cd7MD51TEXT000595580.pdf.txt000595580.pdf.txtExtracted Texttext/plain28292http://www.lume.ufrgs.br/bitstream/10183/20364/2/000595580.pdf.txt33158c3ab96c5208e9607639a8196bbaMD52THUMBNAIL000595580.pdf.jpg000595580.pdf.jpgGenerated Thumbnailimage/jpeg1906http://www.lume.ufrgs.br/bitstream/10183/20364/3/000595580.pdf.jpg44eb848687d8cac96bafe0a844609d79MD5310183/203642021-06-13 04:32:38.91283oai:www.lume.ufrgs.br:10183/20364Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2021-06-13T07:32:38Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false
dc.title.pt_BR.fl_str_mv Electrochemical behavior of Ti and Ti6Al4V in aqueous solutions of citric acid containing halides
title Electrochemical behavior of Ti and Ti6Al4V in aqueous solutions of citric acid containing halides
spellingShingle Electrochemical behavior of Ti and Ti6Al4V in aqueous solutions of citric acid containing halides
Schmidt, Anelise Marlene
Eletroquímica
Ti
Ti6Al4V
Citric acid
Halide ions
title_short Electrochemical behavior of Ti and Ti6Al4V in aqueous solutions of citric acid containing halides
title_full Electrochemical behavior of Ti and Ti6Al4V in aqueous solutions of citric acid containing halides
title_fullStr Electrochemical behavior of Ti and Ti6Al4V in aqueous solutions of citric acid containing halides
title_full_unstemmed Electrochemical behavior of Ti and Ti6Al4V in aqueous solutions of citric acid containing halides
title_sort Electrochemical behavior of Ti and Ti6Al4V in aqueous solutions of citric acid containing halides
author Schmidt, Anelise Marlene
author_facet Schmidt, Anelise Marlene
Azambuja, Denise Schermann
author_role author
author2 Azambuja, Denise Schermann
author2_role author
dc.contributor.author.fl_str_mv Schmidt, Anelise Marlene
Azambuja, Denise Schermann
dc.subject.por.fl_str_mv Eletroquímica
topic Eletroquímica
Ti
Ti6Al4V
Citric acid
Halide ions
dc.subject.eng.fl_str_mv Ti
Ti6Al4V
Citric acid
Halide ions
description This paper reports on an investigation of the electrochemical behavior of Ti grade 2 and Ti6Al4V alloy in aqueous citric acid solutions with pH 2.0 containing halide ions. Voltammetric studies of Ti and the alloy in citric acid, with and without chloride ions, indicate that the Ti and Ti alloy presented a passive behavior in the test solutions used. Pitting was observed at 3.0 and 2.5 V/SCE for Ti and Ti6Al4V, respectively, when bromide ions were added to the solution. In solutions containing fluoride ions, dissolution of the film occurred at potentials close to - 1.0 V/SCE in both electrodes. The iodide ions oxidized on the passive oxide film at potentials close to 1.0 V/SCE. EIS results of the materials in citric acid solutions containing chloride ions revealed that the film’s resistance increased as the applied potential rose from 0 to 1.0 V. In bromide-containing solutions, breakdown of the film was confirmed at potentials above 2.0 V/SCE in both electrodes. These results suggest film reformation for Ti and the alloy in solutions containing fluoride at potentials within the passive region.
publishDate 2006
dc.date.issued.fl_str_mv 2006
dc.date.accessioned.fl_str_mv 2010-04-16T09:14:17Z
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dc.identifier.uri.fl_str_mv http://hdl.handle.net/10183/20364
dc.identifier.issn.pt_BR.fl_str_mv 1516-1439
dc.identifier.nrb.pt_BR.fl_str_mv 000595580
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dc.language.iso.fl_str_mv eng
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dc.relation.ispartof.pt_BR.fl_str_mv Materials research : ibero-american journal of materials. São Carlos, SP. Vol. 9, n. 4 (out./dez. 2006), p. 387-392
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