Comprehensive model for the activation mechanism of Al-Zn alloys produced by indium
- Autores
- Bessone, Jorge Bartolome; Flamini, Daniel Omar; Saidman, Silvana Beatriz
- Año de publicación
- 2005
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Exploratory work on the electrochemical behaviour of the Al-4%Zn alloy in the presence of In3+ in weakly acid chloride and acetic media is reported. It was found that in chloride solutions, active dissolution takes place at very negative potentials (-1.5 VSCE). This significative enhancement in the electrochemical activity of the alloy is described and discussed. The aim of this paper is to explain the relationship between the operating potential (-1.1 VSCE) given by the commercial alloy (basically an Al-Zn-In alloy), its high efficiency, its quasi-uniform attack observed and the enhanced activity found (-1.5 VSCE). An unified model that explains this findings and the activation process of pure Al: by In3+ is proposed. It was found that two activation mechanism are operative on Al: (i) When sufficient amount of In at the interface in quasi-liquid state is present, an In-Al amalgam is responsible for the activation process (-1.5 VSCE). This process is favoured by Zn reach zones that favours In enrichment at the interface by displacement reaction, (ii) At higher anodic potentials (near -1.2 VSCE), the presence of In at the interface facilitates a chloride adsorption process which depolarised the anodic reaction.
Fil: Bessone, Jorge Bartolome. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca; Argentina. Universidad Nacional del Sur. Departamento de Ingeiería Química; Argentina
Fil: Flamini, Daniel Omar. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca; Argentina. Universidad Nacional del Sur. Departamento de Ingeiería Química; Argentina
Fil: Saidman, Silvana Beatriz. Universidad Nacional del Sur. Departamento de Ingeiería Química; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca; Argentina - Materia
-
ACTIVATION MECHANISM
ALUMINIUM ALLOY
AMALGAM - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/97849
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Comprehensive model for the activation mechanism of Al-Zn alloys produced by indiumBessone, Jorge BartolomeFlamini, Daniel OmarSaidman, Silvana BeatrizACTIVATION MECHANISMALUMINIUM ALLOYAMALGAMhttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1Exploratory work on the electrochemical behaviour of the Al-4%Zn alloy in the presence of In3+ in weakly acid chloride and acetic media is reported. It was found that in chloride solutions, active dissolution takes place at very negative potentials (-1.5 VSCE). This significative enhancement in the electrochemical activity of the alloy is described and discussed. The aim of this paper is to explain the relationship between the operating potential (-1.1 VSCE) given by the commercial alloy (basically an Al-Zn-In alloy), its high efficiency, its quasi-uniform attack observed and the enhanced activity found (-1.5 VSCE). An unified model that explains this findings and the activation process of pure Al: by In3+ is proposed. It was found that two activation mechanism are operative on Al: (i) When sufficient amount of In at the interface in quasi-liquid state is present, an In-Al amalgam is responsible for the activation process (-1.5 VSCE). This process is favoured by Zn reach zones that favours In enrichment at the interface by displacement reaction, (ii) At higher anodic potentials (near -1.2 VSCE), the presence of In at the interface facilitates a chloride adsorption process which depolarised the anodic reaction.Fil: Bessone, Jorge Bartolome. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca; Argentina. Universidad Nacional del Sur. Departamento de Ingeiería Química; ArgentinaFil: Flamini, Daniel Omar. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca; Argentina. Universidad Nacional del Sur. Departamento de Ingeiería Química; ArgentinaFil: Saidman, Silvana Beatriz. Universidad Nacional del Sur. Departamento de Ingeiería Química; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca; ArgentinaPergamon-Elsevier Science Ltd2005-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/97849Bessone, Jorge Bartolome; Flamini, Daniel Omar; Saidman, Silvana Beatriz; Comprehensive model for the activation mechanism of Al-Zn alloys produced by indium; Pergamon-Elsevier Science Ltd; Corrosion Science; 47; 1; 1-2005; 95-1050010-938XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0010938X04001209info:eu-repo/semantics/altIdentifier/doi/10.1016/j.corsci.2004.05.002info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:12:05Zoai:ri.conicet.gov.ar:11336/97849instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-03 10:12:05.847CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Comprehensive model for the activation mechanism of Al-Zn alloys produced by indium |
title |
Comprehensive model for the activation mechanism of Al-Zn alloys produced by indium |
spellingShingle |
Comprehensive model for the activation mechanism of Al-Zn alloys produced by indium Bessone, Jorge Bartolome ACTIVATION MECHANISM ALUMINIUM ALLOY AMALGAM |
title_short |
Comprehensive model for the activation mechanism of Al-Zn alloys produced by indium |
title_full |
Comprehensive model for the activation mechanism of Al-Zn alloys produced by indium |
title_fullStr |
Comprehensive model for the activation mechanism of Al-Zn alloys produced by indium |
title_full_unstemmed |
Comprehensive model for the activation mechanism of Al-Zn alloys produced by indium |
title_sort |
Comprehensive model for the activation mechanism of Al-Zn alloys produced by indium |
dc.creator.none.fl_str_mv |
Bessone, Jorge Bartolome Flamini, Daniel Omar Saidman, Silvana Beatriz |
author |
Bessone, Jorge Bartolome |
author_facet |
Bessone, Jorge Bartolome Flamini, Daniel Omar Saidman, Silvana Beatriz |
author_role |
author |
author2 |
Flamini, Daniel Omar Saidman, Silvana Beatriz |
author2_role |
author author |
dc.subject.none.fl_str_mv |
ACTIVATION MECHANISM ALUMINIUM ALLOY AMALGAM |
topic |
ACTIVATION MECHANISM ALUMINIUM ALLOY AMALGAM |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.4 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
Exploratory work on the electrochemical behaviour of the Al-4%Zn alloy in the presence of In3+ in weakly acid chloride and acetic media is reported. It was found that in chloride solutions, active dissolution takes place at very negative potentials (-1.5 VSCE). This significative enhancement in the electrochemical activity of the alloy is described and discussed. The aim of this paper is to explain the relationship between the operating potential (-1.1 VSCE) given by the commercial alloy (basically an Al-Zn-In alloy), its high efficiency, its quasi-uniform attack observed and the enhanced activity found (-1.5 VSCE). An unified model that explains this findings and the activation process of pure Al: by In3+ is proposed. It was found that two activation mechanism are operative on Al: (i) When sufficient amount of In at the interface in quasi-liquid state is present, an In-Al amalgam is responsible for the activation process (-1.5 VSCE). This process is favoured by Zn reach zones that favours In enrichment at the interface by displacement reaction, (ii) At higher anodic potentials (near -1.2 VSCE), the presence of In at the interface facilitates a chloride adsorption process which depolarised the anodic reaction. Fil: Bessone, Jorge Bartolome. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca; Argentina. Universidad Nacional del Sur. Departamento de Ingeiería Química; Argentina Fil: Flamini, Daniel Omar. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca; Argentina. Universidad Nacional del Sur. Departamento de Ingeiería Química; Argentina Fil: Saidman, Silvana Beatriz. Universidad Nacional del Sur. Departamento de Ingeiería Química; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca; Argentina |
description |
Exploratory work on the electrochemical behaviour of the Al-4%Zn alloy in the presence of In3+ in weakly acid chloride and acetic media is reported. It was found that in chloride solutions, active dissolution takes place at very negative potentials (-1.5 VSCE). This significative enhancement in the electrochemical activity of the alloy is described and discussed. The aim of this paper is to explain the relationship between the operating potential (-1.1 VSCE) given by the commercial alloy (basically an Al-Zn-In alloy), its high efficiency, its quasi-uniform attack observed and the enhanced activity found (-1.5 VSCE). An unified model that explains this findings and the activation process of pure Al: by In3+ is proposed. It was found that two activation mechanism are operative on Al: (i) When sufficient amount of In at the interface in quasi-liquid state is present, an In-Al amalgam is responsible for the activation process (-1.5 VSCE). This process is favoured by Zn reach zones that favours In enrichment at the interface by displacement reaction, (ii) At higher anodic potentials (near -1.2 VSCE), the presence of In at the interface facilitates a chloride adsorption process which depolarised the anodic reaction. |
publishDate |
2005 |
dc.date.none.fl_str_mv |
2005-01 |
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 |
http://hdl.handle.net/11336/97849 Bessone, Jorge Bartolome; Flamini, Daniel Omar; Saidman, Silvana Beatriz; Comprehensive model for the activation mechanism of Al-Zn alloys produced by indium; Pergamon-Elsevier Science Ltd; Corrosion Science; 47; 1; 1-2005; 95-105 0010-938X CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/97849 |
identifier_str_mv |
Bessone, Jorge Bartolome; Flamini, Daniel Omar; Saidman, Silvana Beatriz; Comprehensive model for the activation mechanism of Al-Zn alloys produced by indium; Pergamon-Elsevier Science Ltd; Corrosion Science; 47; 1; 1-2005; 95-105 0010-938X CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0010938X04001209 info:eu-repo/semantics/altIdentifier/doi/10.1016/j.corsci.2004.05.002 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Pergamon-Elsevier Science Ltd |
publisher.none.fl_str_mv |
Pergamon-Elsevier Science Ltd |
dc.source.none.fl_str_mv |
reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
reponame_str |
CONICET Digital (CONICET) |
collection |
CONICET Digital (CONICET) |
instname_str |
Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.name.fl_str_mv |
CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.mail.fl_str_mv |
dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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1842270184857927680 |
score |
13.13397 |