Comparative study of the passivity and the breakdown of passivity of polycrystalline iron in different alkaline solutions
- Autores
- Albani, Oscar Alfredo; Gassa, Liliana Mabel; Zerbino, Jorge Omar; Vilche, Jorge Roberto; Arvia, Alejandro Jorge
- Año de publicación
- 1990
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- The passivity and passivity breakdown of polycrystalline iron is investigated through electrochemical methods complemented with ellipsometry, by employing plain 0.04 M NaOH and saturated Ca(OH)2 solutions with the addition of chloride salt of concentrations up to 1 M. The comparative results indicate that the initial reactions of Fe(OH)2 formation at the inner part of the passive layer level (Fe3O4) are only slightly influenced by either the cation or the presence of Cl− ion in solution, in contrast to their large influence at the outer part of the passive layer (hydrous FeOOH species) where Fe2+/Fe3+ redox reactions take place. At high positive potential the breakdown of passivity is also influenced by both Cl− ion and cation present in solution.
Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas - Materia
-
Ciencias Exactas
Química
Passivity of iron
Passivity breakdown
Iron in saturated Ca(OH)2 solutions
Ellipsometry of passive iron layers
Influence of Cl− ions on passive iron
Composite passive iron layer structure - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by-nc-nd/4.0/
- Repositorio
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/119219
Ver los metadatos del registro completo
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Comparative study of the passivity and the breakdown of passivity of polycrystalline iron in different alkaline solutionsAlbani, Oscar AlfredoGassa, Liliana MabelZerbino, Jorge OmarVilche, Jorge RobertoArvia, Alejandro JorgeCiencias ExactasQuímicaPassivity of ironPassivity breakdownIron in saturated Ca(OH)2 solutionsEllipsometry of passive iron layersInfluence of Cl− ions on passive ironComposite passive iron layer structureThe passivity and passivity breakdown of polycrystalline iron is investigated through electrochemical methods complemented with ellipsometry, by employing plain 0.04 M NaOH and saturated Ca(OH)<sub>2</sub> solutions with the addition of chloride salt of concentrations up to 1 M. The comparative results indicate that the initial reactions of Fe(OH)<sub>2</sub> formation at the inner part of the passive layer level (Fe<sub>3</sub>O<sub>4</sub>) are only slightly influenced by either the cation or the presence of Cl− ion in solution, in contrast to their large influence at the outer part of the passive layer (hydrous FeOOH species) where Fe<sup>2+</sup>/Fe<sup>3+</sup> redox reactions take place. At high positive potential the breakdown of passivity is also influenced by both Cl− ion and cation present in solution.Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas1990info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf1437-1444http://sedici.unlp.edu.ar/handle/10915/119219enginfo:eu-repo/semantics/altIdentifier/issn/0013-4686info:eu-repo/semantics/altIdentifier/doi/10.1016/0013-4686(90)85018-Iinfo:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-nd/4.0/Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:28:05Zoai:sedici.unlp.edu.ar:10915/119219Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:28:05.981SEDICI (UNLP) - Universidad Nacional de La Platafalse |
dc.title.none.fl_str_mv |
Comparative study of the passivity and the breakdown of passivity of polycrystalline iron in different alkaline solutions |
title |
Comparative study of the passivity and the breakdown of passivity of polycrystalline iron in different alkaline solutions |
spellingShingle |
Comparative study of the passivity and the breakdown of passivity of polycrystalline iron in different alkaline solutions Albani, Oscar Alfredo Ciencias Exactas Química Passivity of iron Passivity breakdown Iron in saturated Ca(OH)2 solutions Ellipsometry of passive iron layers Influence of Cl− ions on passive iron Composite passive iron layer structure |
title_short |
Comparative study of the passivity and the breakdown of passivity of polycrystalline iron in different alkaline solutions |
title_full |
Comparative study of the passivity and the breakdown of passivity of polycrystalline iron in different alkaline solutions |
title_fullStr |
Comparative study of the passivity and the breakdown of passivity of polycrystalline iron in different alkaline solutions |
title_full_unstemmed |
Comparative study of the passivity and the breakdown of passivity of polycrystalline iron in different alkaline solutions |
title_sort |
Comparative study of the passivity and the breakdown of passivity of polycrystalline iron in different alkaline solutions |
dc.creator.none.fl_str_mv |
Albani, Oscar Alfredo Gassa, Liliana Mabel Zerbino, Jorge Omar Vilche, Jorge Roberto Arvia, Alejandro Jorge |
author |
Albani, Oscar Alfredo |
author_facet |
Albani, Oscar Alfredo Gassa, Liliana Mabel Zerbino, Jorge Omar Vilche, Jorge Roberto Arvia, Alejandro Jorge |
author_role |
author |
author2 |
Gassa, Liliana Mabel Zerbino, Jorge Omar Vilche, Jorge Roberto Arvia, Alejandro Jorge |
author2_role |
author author author author |
dc.subject.none.fl_str_mv |
Ciencias Exactas Química Passivity of iron Passivity breakdown Iron in saturated Ca(OH)2 solutions Ellipsometry of passive iron layers Influence of Cl− ions on passive iron Composite passive iron layer structure |
topic |
Ciencias Exactas Química Passivity of iron Passivity breakdown Iron in saturated Ca(OH)2 solutions Ellipsometry of passive iron layers Influence of Cl− ions on passive iron Composite passive iron layer structure |
dc.description.none.fl_txt_mv |
The passivity and passivity breakdown of polycrystalline iron is investigated through electrochemical methods complemented with ellipsometry, by employing plain 0.04 M NaOH and saturated Ca(OH)<sub>2</sub> solutions with the addition of chloride salt of concentrations up to 1 M. The comparative results indicate that the initial reactions of Fe(OH)<sub>2</sub> formation at the inner part of the passive layer level (Fe<sub>3</sub>O<sub>4</sub>) are only slightly influenced by either the cation or the presence of Cl− ion in solution, in contrast to their large influence at the outer part of the passive layer (hydrous FeOOH species) where Fe<sup>2+</sup>/Fe<sup>3+</sup> redox reactions take place. At high positive potential the breakdown of passivity is also influenced by both Cl− ion and cation present in solution. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas |
description |
The passivity and passivity breakdown of polycrystalline iron is investigated through electrochemical methods complemented with ellipsometry, by employing plain 0.04 M NaOH and saturated Ca(OH)<sub>2</sub> solutions with the addition of chloride salt of concentrations up to 1 M. The comparative results indicate that the initial reactions of Fe(OH)<sub>2</sub> formation at the inner part of the passive layer level (Fe<sub>3</sub>O<sub>4</sub>) are only slightly influenced by either the cation or the presence of Cl− ion in solution, in contrast to their large influence at the outer part of the passive layer (hydrous FeOOH species) where Fe<sup>2+</sup>/Fe<sup>3+</sup> redox reactions take place. At high positive potential the breakdown of passivity is also influenced by both Cl− ion and cation present in solution. |
publishDate |
1990 |
dc.date.none.fl_str_mv |
1990 |
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/10915/119219 |
url |
http://sedici.unlp.edu.ar/handle/10915/119219 |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/issn/0013-4686 info:eu-repo/semantics/altIdentifier/doi/10.1016/0013-4686(90)85018-I |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-nd/4.0/ Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
http://creativecommons.org/licenses/by-nc-nd/4.0/ Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) |
dc.format.none.fl_str_mv |
application/pdf 1437-1444 |
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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