Electrochemical analysis of the ASTM F75 alloy at different pH values and temperatures
- Autores
- Kociubczyk, Alex Iván; Méndez, Claudia Marcela; Gregorutti, Ricardo Walter; Ares, Alicia Esther
- Año de publicación
- 2017
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- The electrochemical behavior of ASTM F75 alloy was analyzed in a sodium chloride solution at pH values of 5, 7, and 9 and temperatures of 37 and 42 °C. The tests were performed in samples corresponding to two different regions of a hip prosthesis. Polarization curves showed that as pH increased the passivity range decreased. However, according to the complementary potentiodynamic–potentiostatic– potentiodynamic technique performed, the increase in the anodic current density was due to a change in the chromium oxidation state from Cr+3 to Cr+6 to form CrO4 −2, and not to localized corrosion. On the other hand, neither the microstructure nor the temperature had influence on the electrochemical response ofASTMF75. The electrochemical impedance spectroscopy test showed that as pH increased, the passive film became more compact and thicker. However, its resistance decreased and the electrical double layer became more disordered, promoting diffusion processes of charged species. These results are in agreement with those obtained in the polarization curves, which showed an increase in the dissolution of the passive film, caused by the change in the chromium oxidation state, as pH increased.
- Materia
-
Ingeniería de los Materiales
ASTM F75
biomaterials
corrosion
pH
temperature - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by-nc-nd/4.0/
- Repositorio
- Institución
- Comisión de Investigaciones Científicas de la Provincia de Buenos Aires
- OAI Identificador
- oai:digital.cic.gba.gob.ar:11746/8156
Ver los metadatos del registro completo
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Electrochemical analysis of the ASTM F75 alloy at different pH values and temperaturesKociubczyk, Alex IvánMéndez, Claudia MarcelaGregorutti, Ricardo WalterAres, Alicia EstherIngeniería de los MaterialesASTM F75biomaterialscorrosionpHtemperatureThe electrochemical behavior of ASTM F75 alloy was analyzed in a sodium chloride solution at pH values of 5, 7, and 9 and temperatures of 37 and 42 °C. The tests were performed in samples corresponding to two different regions of a hip prosthesis. Polarization curves showed that as pH increased the passivity range decreased. However, according to the complementary potentiodynamic–potentiostatic– potentiodynamic technique performed, the increase in the anodic current density was due to a change in the chromium oxidation state from Cr+3 to Cr+6 to form CrO4 −2, and not to localized corrosion. On the other hand, neither the microstructure nor the temperature had influence on the electrochemical response ofASTMF75. The electrochemical impedance spectroscopy test showed that as pH increased, the passive film became more compact and thicker. However, its resistance decreased and the electrical double layer became more disordered, promoting diffusion processes of charged species. These results are in agreement with those obtained in the polarization curves, which showed an increase in the dissolution of the passive film, caused by the change in the chromium oxidation state, as pH increased.Wiley2017-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttps://digital.cic.gba.gob.ar/handle/11746/8156enginfo:eu-repo/semantics/altIdentifier/doi/10.1002/maco.201609394info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-nd/4.0/reponame:CIC Digital (CICBA)instname:Comisión de Investigaciones Científicas de la Provincia de Buenos Airesinstacron:CICBA2025-09-04T09:43:43Zoai:digital.cic.gba.gob.ar:11746/8156Institucionalhttp://digital.cic.gba.gob.arOrganismo científico-tecnológicoNo correspondehttp://digital.cic.gba.gob.ar/oai/snrdmarisa.degiusti@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:94412025-09-04 09:43:43.908CIC Digital (CICBA) - Comisión de Investigaciones Científicas de la Provincia de Buenos Airesfalse |
dc.title.none.fl_str_mv |
Electrochemical analysis of the ASTM F75 alloy at different pH values and temperatures |
title |
Electrochemical analysis of the ASTM F75 alloy at different pH values and temperatures |
spellingShingle |
Electrochemical analysis of the ASTM F75 alloy at different pH values and temperatures Kociubczyk, Alex Iván Ingeniería de los Materiales ASTM F75 biomaterials corrosion pH temperature |
title_short |
Electrochemical analysis of the ASTM F75 alloy at different pH values and temperatures |
title_full |
Electrochemical analysis of the ASTM F75 alloy at different pH values and temperatures |
title_fullStr |
Electrochemical analysis of the ASTM F75 alloy at different pH values and temperatures |
title_full_unstemmed |
Electrochemical analysis of the ASTM F75 alloy at different pH values and temperatures |
title_sort |
Electrochemical analysis of the ASTM F75 alloy at different pH values and temperatures |
dc.creator.none.fl_str_mv |
Kociubczyk, Alex Iván Méndez, Claudia Marcela Gregorutti, Ricardo Walter Ares, Alicia Esther |
author |
Kociubczyk, Alex Iván |
author_facet |
Kociubczyk, Alex Iván Méndez, Claudia Marcela Gregorutti, Ricardo Walter Ares, Alicia Esther |
author_role |
author |
author2 |
Méndez, Claudia Marcela Gregorutti, Ricardo Walter Ares, Alicia Esther |
author2_role |
author author author |
dc.subject.none.fl_str_mv |
Ingeniería de los Materiales ASTM F75 biomaterials corrosion pH temperature |
topic |
Ingeniería de los Materiales ASTM F75 biomaterials corrosion pH temperature |
dc.description.none.fl_txt_mv |
The electrochemical behavior of ASTM F75 alloy was analyzed in a sodium chloride solution at pH values of 5, 7, and 9 and temperatures of 37 and 42 °C. The tests were performed in samples corresponding to two different regions of a hip prosthesis. Polarization curves showed that as pH increased the passivity range decreased. However, according to the complementary potentiodynamic–potentiostatic– potentiodynamic technique performed, the increase in the anodic current density was due to a change in the chromium oxidation state from Cr+3 to Cr+6 to form CrO4 −2, and not to localized corrosion. On the other hand, neither the microstructure nor the temperature had influence on the electrochemical response ofASTMF75. The electrochemical impedance spectroscopy test showed that as pH increased, the passive film became more compact and thicker. However, its resistance decreased and the electrical double layer became more disordered, promoting diffusion processes of charged species. These results are in agreement with those obtained in the polarization curves, which showed an increase in the dissolution of the passive film, caused by the change in the chromium oxidation state, as pH increased. |
description |
The electrochemical behavior of ASTM F75 alloy was analyzed in a sodium chloride solution at pH values of 5, 7, and 9 and temperatures of 37 and 42 °C. The tests were performed in samples corresponding to two different regions of a hip prosthesis. Polarization curves showed that as pH increased the passivity range decreased. However, according to the complementary potentiodynamic–potentiostatic– potentiodynamic technique performed, the increase in the anodic current density was due to a change in the chromium oxidation state from Cr+3 to Cr+6 to form CrO4 −2, and not to localized corrosion. On the other hand, neither the microstructure nor the temperature had influence on the electrochemical response ofASTMF75. The electrochemical impedance spectroscopy test showed that as pH increased, the passive film became more compact and thicker. However, its resistance decreased and the electrical double layer became more disordered, promoting diffusion processes of charged species. These results are in agreement with those obtained in the polarization curves, which showed an increase in the dissolution of the passive film, caused by the change in the chromium oxidation state, as pH increased. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-09 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
https://digital.cic.gba.gob.ar/handle/11746/8156 |
url |
https://digital.cic.gba.gob.ar/handle/11746/8156 |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/doi/10.1002/maco.201609394 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-nd/4.0/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
http://creativecommons.org/licenses/by-nc-nd/4.0/ |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Wiley |
publisher.none.fl_str_mv |
Wiley |
dc.source.none.fl_str_mv |
reponame:CIC Digital (CICBA) instname:Comisión de Investigaciones Científicas de la Provincia de Buenos Aires instacron:CICBA |
reponame_str |
CIC Digital (CICBA) |
collection |
CIC Digital (CICBA) |
instname_str |
Comisión de Investigaciones Científicas de la Provincia de Buenos Aires |
instacron_str |
CICBA |
institution |
CICBA |
repository.name.fl_str_mv |
CIC Digital (CICBA) - Comisión de Investigaciones Científicas de la Provincia de Buenos Aires |
repository.mail.fl_str_mv |
marisa.degiusti@sedici.unlp.edu.ar |
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score |
12.623145 |