Aluminium activation produced by gallium

Autores
Flamini, Daniel Omar; Saidman, Silvana Beatriz; Bessone, Jorge Bartolome
Año de publicación
2006
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The electrochemical behaviour of pure aluminium in the presence of gallium ions or in direct contact with gallium, in chloride, acetic acid solutions or distilled water is reported. The enhance activity of aluminium is described and discussed. Two active regions were observed, one at approximately -1.5 V and the second at near -1.1 V. Two activation mechanisms are proposed. One where a critical surface concentration of liquid gallium is achieved, a Ga-Al amalgam is responsible for the activation process (-1.5 V) and a uniform attack morphology is observed. This process is favoured by the exothermic Al ion hydrolysis reaction and hindered by Ga losses at the active interface. And a second at higher anodic potentials (near -1.1 V), and in chloride containing media, where the presence of solid Ga (saturated amalgam) at the interface facilitates a chloride adsorption process which depolarised the anodic reaction, and produced localised attack.
Fil: Flamini, Daniel Omar. Universidad Nacional del Sur. Departamento de Ingeniería Química; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca; Argentina
Fil: Saidman, Silvana Beatriz. Universidad Nacional del Sur. Departamento de Ingeniería Química; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca; Argentina
Fil: Bessone, Jorge Bartolome. Universidad Nacional del Sur. Departamento de Ingeniería Química; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca; Argentina
Materia
Activation Mechanism
Aluminium
Amalgam
Gallium
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:11336/82248
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Aluminium activation produced by galliumFlamini, Daniel OmarSaidman, Silvana BeatrizBessone, Jorge BartolomeActivation MechanismAluminiumAmalgamGalliumhttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1The electrochemical behaviour of pure aluminium in the presence of gallium ions or in direct contact with gallium, in chloride, acetic acid solutions or distilled water is reported. The enhance activity of aluminium is described and discussed. Two active regions were observed, one at approximately -1.5 V and the second at near -1.1 V. Two activation mechanisms are proposed. One where a critical surface concentration of liquid gallium is achieved, a Ga-Al amalgam is responsible for the activation process (-1.5 V) and a uniform attack morphology is observed. This process is favoured by the exothermic Al ion hydrolysis reaction and hindered by Ga losses at the active interface. And a second at higher anodic potentials (near -1.1 V), and in chloride containing media, where the presence of solid Ga (saturated amalgam) at the interface facilitates a chloride adsorption process which depolarised the anodic reaction, and produced localised attack.Fil: Flamini, Daniel Omar. Universidad Nacional del Sur. Departamento de Ingeniería Química; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca; ArgentinaFil: Saidman, Silvana Beatriz. Universidad Nacional del Sur. Departamento de Ingeniería Química; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca; ArgentinaFil: Bessone, Jorge Bartolome. Universidad Nacional del Sur. Departamento de Ingeniería Química; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca; ArgentinaPergamon-Elsevier Science Ltd2006-06info: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/11336/82248Flamini, Daniel Omar; Saidman, Silvana Beatriz; Bessone, Jorge Bartolome; Aluminium activation produced by gallium; Pergamon-Elsevier Science Ltd; Corrosion Science; 48; 6; 6-2006; 1413-14250010-938XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0010938X0500154Xinfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.corsci.2005.05.014info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:08:01Zoai:ri.conicet.gov.ar:11336/82248instacron: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 10:08:02.181CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Aluminium activation produced by gallium
title Aluminium activation produced by gallium
spellingShingle Aluminium activation produced by gallium
Flamini, Daniel Omar
Activation Mechanism
Aluminium
Amalgam
Gallium
title_short Aluminium activation produced by gallium
title_full Aluminium activation produced by gallium
title_fullStr Aluminium activation produced by gallium
title_full_unstemmed Aluminium activation produced by gallium
title_sort Aluminium activation produced by gallium
dc.creator.none.fl_str_mv Flamini, Daniel Omar
Saidman, Silvana Beatriz
Bessone, Jorge Bartolome
author Flamini, Daniel Omar
author_facet Flamini, Daniel Omar
Saidman, Silvana Beatriz
Bessone, Jorge Bartolome
author_role author
author2 Saidman, Silvana Beatriz
Bessone, Jorge Bartolome
author2_role author
author
dc.subject.none.fl_str_mv Activation Mechanism
Aluminium
Amalgam
Gallium
topic Activation Mechanism
Aluminium
Amalgam
Gallium
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The electrochemical behaviour of pure aluminium in the presence of gallium ions or in direct contact with gallium, in chloride, acetic acid solutions or distilled water is reported. The enhance activity of aluminium is described and discussed. Two active regions were observed, one at approximately -1.5 V and the second at near -1.1 V. Two activation mechanisms are proposed. One where a critical surface concentration of liquid gallium is achieved, a Ga-Al amalgam is responsible for the activation process (-1.5 V) and a uniform attack morphology is observed. This process is favoured by the exothermic Al ion hydrolysis reaction and hindered by Ga losses at the active interface. And a second at higher anodic potentials (near -1.1 V), and in chloride containing media, where the presence of solid Ga (saturated amalgam) at the interface facilitates a chloride adsorption process which depolarised the anodic reaction, and produced localised attack.
Fil: Flamini, Daniel Omar. Universidad Nacional del Sur. Departamento de Ingeniería Química; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca; Argentina
Fil: Saidman, Silvana Beatriz. Universidad Nacional del Sur. Departamento de Ingeniería Química; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca; Argentina
Fil: Bessone, Jorge Bartolome. Universidad Nacional del Sur. Departamento de Ingeniería Química; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca; Argentina
description The electrochemical behaviour of pure aluminium in the presence of gallium ions or in direct contact with gallium, in chloride, acetic acid solutions or distilled water is reported. The enhance activity of aluminium is described and discussed. Two active regions were observed, one at approximately -1.5 V and the second at near -1.1 V. Two activation mechanisms are proposed. One where a critical surface concentration of liquid gallium is achieved, a Ga-Al amalgam is responsible for the activation process (-1.5 V) and a uniform attack morphology is observed. This process is favoured by the exothermic Al ion hydrolysis reaction and hindered by Ga losses at the active interface. And a second at higher anodic potentials (near -1.1 V), and in chloride containing media, where the presence of solid Ga (saturated amalgam) at the interface facilitates a chloride adsorption process which depolarised the anodic reaction, and produced localised attack.
publishDate 2006
dc.date.none.fl_str_mv 2006-06
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/11336/82248
Flamini, Daniel Omar; Saidman, Silvana Beatriz; Bessone, Jorge Bartolome; Aluminium activation produced by gallium; Pergamon-Elsevier Science Ltd; Corrosion Science; 48; 6; 6-2006; 1413-1425
0010-938X
CONICET Digital
CONICET
url http://hdl.handle.net/11336/82248
identifier_str_mv Flamini, Daniel Omar; Saidman, Silvana Beatriz; Bessone, Jorge Bartolome; Aluminium activation produced by gallium; Pergamon-Elsevier Science Ltd; Corrosion Science; 48; 6; 6-2006; 1413-1425
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/S0010938X0500154X
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.corsci.2005.05.014
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 13.13397

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