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
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/97849
Acceder
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network_acronym_str CONICETDig
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network_name_str CONICET Digital (CONICET)
spelling 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 Técnicas2025-09-29T10:47:48Zoai: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:34982025-09-29 10:47:49.075CONICET 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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score 13.069144

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