Effect of fluoride ions on Ti6Al4V alloy passivation in lactated Ringer's serum

Detalhes bibliográficos
Autor(a) principal: Schmidt,Anelise M.
Data de Publicação: 2003
Outros Autores: Azambuja,Denise S.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Materials research (São Carlos. Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392003000200018
Resumo: The corrosive behavior of Ti and its alloys in fluoride media is well known. Based on electrochemical studies, this paper describes the effect of fluoride ions on the passive behavior of Ti6Al4V alloy in lactated Ringer's serum. The open circuit potential of the alloy in the serum, which lies in the passive region of TiO2, shifts to more negative values as fluoride ions are added. The voltammogram obtained in the serum presents an active-passive behavior close to -0.2 V (SCE) that changes with the presence of fluoride ions, evidencing higher anodic currents. Electrochemical impedance spectroscopy plots obtained at OCP after varying immersion times in the serum display an almost capacitive behavior and the polarization resistance becomes enhanced after 7 days. With the addition of fluoride ions, the film's resistance decreases, but a stable protective layer develops after 7 days of immersion time, indicating the film's repair.
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spelling Effect of fluoride ions on Ti6Al4V alloy passivation in lactated Ringer's serumtitanium alloyserumfluorideThe corrosive behavior of Ti and its alloys in fluoride media is well known. Based on electrochemical studies, this paper describes the effect of fluoride ions on the passive behavior of Ti6Al4V alloy in lactated Ringer's serum. The open circuit potential of the alloy in the serum, which lies in the passive region of TiO2, shifts to more negative values as fluoride ions are added. The voltammogram obtained in the serum presents an active-passive behavior close to -0.2 V (SCE) that changes with the presence of fluoride ions, evidencing higher anodic currents. Electrochemical impedance spectroscopy plots obtained at OCP after varying immersion times in the serum display an almost capacitive behavior and the polarization resistance becomes enhanced after 7 days. With the addition of fluoride ions, the film's resistance decreases, but a stable protective layer develops after 7 days of immersion time, indicating the film's repair.ABM, ABC, ABPol2003-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392003000200018Materials Research v.6 n.2 2003reponame:Materials research (São Carlos. Online)instname:Universidade Federal de São Carlos (UFSCAR)instacron:ABM ABC ABPOL10.1590/S1516-14392003000200018info:eu-repo/semantics/openAccessSchmidt,Anelise M.Azambuja,Denise S.eng2003-06-27T00:00:00Zoai:scielo:S1516-14392003000200018Revistahttp://www.scielo.br/mrPUBhttps://old.scielo.br/oai/scielo-oai.phpdedz@power.ufscar.br1980-53731516-1439opendoar:2003-06-27T00:00Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)false
dc.title.none.fl_str_mv Effect of fluoride ions on Ti6Al4V alloy passivation in lactated Ringer's serum
title Effect of fluoride ions on Ti6Al4V alloy passivation in lactated Ringer's serum
spellingShingle Effect of fluoride ions on Ti6Al4V alloy passivation in lactated Ringer's serum
Schmidt,Anelise M.
titanium alloy
serum
fluoride
title_short Effect of fluoride ions on Ti6Al4V alloy passivation in lactated Ringer's serum
title_full Effect of fluoride ions on Ti6Al4V alloy passivation in lactated Ringer's serum
title_fullStr Effect of fluoride ions on Ti6Al4V alloy passivation in lactated Ringer's serum
title_full_unstemmed Effect of fluoride ions on Ti6Al4V alloy passivation in lactated Ringer's serum
title_sort Effect of fluoride ions on Ti6Al4V alloy passivation in lactated Ringer's serum
author Schmidt,Anelise M.
author_facet Schmidt,Anelise M.
Azambuja,Denise S.
author_role author
author2 Azambuja,Denise S.
author2_role author
dc.contributor.author.fl_str_mv Schmidt,Anelise M.
Azambuja,Denise S.
dc.subject.por.fl_str_mv titanium alloy
serum
fluoride
topic titanium alloy
serum
fluoride
description The corrosive behavior of Ti and its alloys in fluoride media is well known. Based on electrochemical studies, this paper describes the effect of fluoride ions on the passive behavior of Ti6Al4V alloy in lactated Ringer's serum. The open circuit potential of the alloy in the serum, which lies in the passive region of TiO2, shifts to more negative values as fluoride ions are added. The voltammogram obtained in the serum presents an active-passive behavior close to -0.2 V (SCE) that changes with the presence of fluoride ions, evidencing higher anodic currents. Electrochemical impedance spectroscopy plots obtained at OCP after varying immersion times in the serum display an almost capacitive behavior and the polarization resistance becomes enhanced after 7 days. With the addition of fluoride ions, the film's resistance decreases, but a stable protective layer develops after 7 days of immersion time, indicating the film's repair.
publishDate 2003
dc.date.none.fl_str_mv 2003-06-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392003000200018
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392003000200018
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S1516-14392003000200018
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv ABM, ABC, ABPol
publisher.none.fl_str_mv ABM, ABC, ABPol
dc.source.none.fl_str_mv Materials Research v.6 n.2 2003
reponame:Materials research (São Carlos. Online)
instname:Universidade Federal de São Carlos (UFSCAR)
instacron:ABM ABC ABPOL
instname_str Universidade Federal de São Carlos (UFSCAR)
instacron_str ABM ABC ABPOL
institution ABM ABC ABPOL
reponame_str Materials research (São Carlos. Online)
collection Materials research (São Carlos. Online)
repository.name.fl_str_mv Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)
repository.mail.fl_str_mv dedz@power.ufscar.br
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