In-situ spectroelectrochemistry (UV-visible and infrared) of anodic films on iron in neutral phosphate solutions

Autores
Borrás, C. A.; Romagnoli, Roberto; Lezna, Reynaldo Oscar
Año de publicación
2000
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The composition of anodic films on iron formed at different potentials in neutral solutions has been investigated by in-situ UV–vis and IR spectroscopies in the presence of PO4 3−, a non-contaminant inhibitor used in anticorrosive paints. Optical and electrochemical determinations were used to detect and characterize two well-defined current waves in the active region of Fe and a following passive zone at more positive potentials. The response has been associated with the presence on the surface, in the dissolution zone, of Fe3 II[PO4]2 as the main species and probably some [FeIIIPO4]. [FeIIIPO4] has been detected in the passive region by in-situ IR spectroscopy. Only minor amounts of Fe2+ and Fe3+ species in solution have been detected optically. These phosphated overlayers are believed to provide extra protective properties to the passivating film.
Centro de Investigación y Desarrollo en Tecnología de Pinturas
Materia
Química
Iron corrosion
Passivation
Coatings
Phosphate inhibitors
In-situ spectroscopy
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/168740
Acceder
id SEDICI_22d9420bf1229695d28e99156139bcdb
oai_identifier_str oai:sedici.unlp.edu.ar:10915/168740
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling In-situ spectroelectrochemistry (UV-visible and infrared) of anodic films on iron in neutral phosphate solutionsBorrás, C. A.Romagnoli, RobertoLezna, Reynaldo OscarQuímicaIron corrosionPassivationCoatingsPhosphate inhibitorsIn-situ spectroscopyThe composition of anodic films on iron formed at different potentials in neutral solutions has been investigated by in-situ UV–vis and IR spectroscopies in the presence of PO4 3−, a non-contaminant inhibitor used in anticorrosive paints. Optical and electrochemical determinations were used to detect and characterize two well-defined current waves in the active region of Fe and a following passive zone at more positive potentials. The response has been associated with the presence on the surface, in the dissolution zone, of Fe3 II[PO4]2 as the main species and probably some [FeIIIPO4]. [FeIIIPO4] has been detected in the passive region by in-situ IR spectroscopy. Only minor amounts of Fe2+ and Fe3+ species in solution have been detected optically. These phosphated overlayers are believed to provide extra protective properties to the passivating film.Centro de Investigación y Desarrollo en Tecnología de Pinturas2000-02-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf1717-1725http://sedici.unlp.edu.ar/handle/10915/168740enginfo:eu-repo/semantics/altIdentifier/issn/0013-4686info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-10-15T11:36:36Zoai:sedici.unlp.edu.ar:10915/168740Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-10-15 11:36:36.221SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv In-situ spectroelectrochemistry (UV-visible and infrared) of anodic films on iron in neutral phosphate solutions
title In-situ spectroelectrochemistry (UV-visible and infrared) of anodic films on iron in neutral phosphate solutions
spellingShingle In-situ spectroelectrochemistry (UV-visible and infrared) of anodic films on iron in neutral phosphate solutions
Borrás, C. A.
Química
Iron corrosion
Passivation
Coatings
Phosphate inhibitors
In-situ spectroscopy
title_short In-situ spectroelectrochemistry (UV-visible and infrared) of anodic films on iron in neutral phosphate solutions
title_full In-situ spectroelectrochemistry (UV-visible and infrared) of anodic films on iron in neutral phosphate solutions
title_fullStr In-situ spectroelectrochemistry (UV-visible and infrared) of anodic films on iron in neutral phosphate solutions
title_full_unstemmed In-situ spectroelectrochemistry (UV-visible and infrared) of anodic films on iron in neutral phosphate solutions
title_sort In-situ spectroelectrochemistry (UV-visible and infrared) of anodic films on iron in neutral phosphate solutions
dc.creator.none.fl_str_mv Borrás, C. A.
Romagnoli, Roberto
Lezna, Reynaldo Oscar
author Borrás, C. A.
author_facet Borrás, C. A.
Romagnoli, Roberto
Lezna, Reynaldo Oscar
author_role author
author2 Romagnoli, Roberto
Lezna, Reynaldo Oscar
author2_role author
author
dc.subject.none.fl_str_mv Química
Iron corrosion
Passivation
Coatings
Phosphate inhibitors
In-situ spectroscopy
topic Química
Iron corrosion
Passivation
Coatings
Phosphate inhibitors
In-situ spectroscopy
dc.description.none.fl_txt_mv The composition of anodic films on iron formed at different potentials in neutral solutions has been investigated by in-situ UV–vis and IR spectroscopies in the presence of PO4 3−, a non-contaminant inhibitor used in anticorrosive paints. Optical and electrochemical determinations were used to detect and characterize two well-defined current waves in the active region of Fe and a following passive zone at more positive potentials. The response has been associated with the presence on the surface, in the dissolution zone, of Fe3 II[PO4]2 as the main species and probably some [FeIIIPO4]. [FeIIIPO4] has been detected in the passive region by in-situ IR spectroscopy. Only minor amounts of Fe2+ and Fe3+ species in solution have been detected optically. These phosphated overlayers are believed to provide extra protective properties to the passivating film.
Centro de Investigación y Desarrollo en Tecnología de Pinturas
description The composition of anodic films on iron formed at different potentials in neutral solutions has been investigated by in-situ UV–vis and IR spectroscopies in the presence of PO4 3−, a non-contaminant inhibitor used in anticorrosive paints. Optical and electrochemical determinations were used to detect and characterize two well-defined current waves in the active region of Fe and a following passive zone at more positive potentials. The response has been associated with the presence on the surface, in the dissolution zone, of Fe3 II[PO4]2 as the main species and probably some [FeIIIPO4]. [FeIIIPO4] has been detected in the passive region by in-situ IR spectroscopy. Only minor amounts of Fe2+ and Fe3+ species in solution have been detected optically. These phosphated overlayers are believed to provide extra protective properties to the passivating film.
publishDate 2000
dc.date.none.fl_str_mv 2000-02-01
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/168740
url http://sedici.unlp.edu.ar/handle/10915/168740
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/0013-4686
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
1717-1725
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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score 13.22299

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