Electrochemical behaviour of Ni-Co amorphous alloys in alkaline solutions

Autores
Barbosa, M. R.; Gassa, Liliana Mabel; Ruiz, Elsa Rosa
Año de publicación
2001
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The dissolution processes of amorphous G15 (Ni₅₈Co₂₀B₁₂Si₁₀) and G16 (Ni₂₅Co₅₀B₁₀Si₁₅) alloys in carbonate-bicarbonate buffers (8.9 ≤ pH ≤ 10.5) have been studied using voltammetry and stationary polarization techniques combined with electrochemical impedance spectroscopy and X-ray photoelectron spectroscopy (XPS) measurements. Results indicate that the electrochemical processes are dependent on the applied potential, the alloy composition, and the pH and ionic strength of the electrolyte. An enhancement of the corrosion processes is observed when the pH and the ionic strength are increased and when the Co content of the alloy diminishes. Furthermore, XPS provided information about the composition of the surface layer.
Facultad de Ciencias Exactas
Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas
Materia
Ciencias Exactas
Química
Ni-Co alloys
Amorphous alloys
Electrochemistry
Electrochemical impedance spectroscopy
X-ray photoelectron 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:10915/131821
Acceder
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oai_identifier_str oai:sedici.unlp.edu.ar:10915/131821
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Electrochemical behaviour of Ni-Co amorphous alloys in alkaline solutionsBarbosa, M. R.Gassa, Liliana MabelRuiz, Elsa RosaCiencias ExactasQuímicaNi-Co alloysAmorphous alloysElectrochemistryElectrochemical impedance spectroscopyX-ray photoelectron spectroscopyThe dissolution processes of amorphous G15 (Ni₅₈Co₂₀B₁₂Si₁₀) and G16 (Ni₂₅Co₅₀B₁₀Si₁₅) alloys in carbonate-bicarbonate buffers (8.9 ≤ pH ≤ 10.5) have been studied using voltammetry and stationary polarization techniques combined with electrochemical impedance spectroscopy and X-ray photoelectron spectroscopy (XPS) measurements. Results indicate that the electrochemical processes are dependent on the applied potential, the alloy composition, and the pH and ionic strength of the electrolyte. An enhancement of the corrosion processes is observed when the pH and the ionic strength are increased and when the Co content of the alloy diminishes. Furthermore, XPS provided information about the composition of the surface layer.Facultad de Ciencias ExactasInstituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas2001-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf1-7http://sedici.unlp.edu.ar/handle/10915/131821enginfo:eu-repo/semantics/altIdentifier/issn/1432-8488info:eu-repo/semantics/altIdentifier/issn/1433-0768info:eu-repo/semantics/altIdentifier/doi/10.1007/s100080000189info: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:UNLP2025-10-15T11:23:38Zoai:sedici.unlp.edu.ar:10915/131821Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-10-15 11:23:39.02SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Electrochemical behaviour of Ni-Co amorphous alloys in alkaline solutions
title Electrochemical behaviour of Ni-Co amorphous alloys in alkaline solutions
spellingShingle Electrochemical behaviour of Ni-Co amorphous alloys in alkaline solutions
Barbosa, M. R.
Ciencias Exactas
Química
Ni-Co alloys
Amorphous alloys
Electrochemistry
Electrochemical impedance spectroscopy
X-ray photoelectron spectroscopy
title_short Electrochemical behaviour of Ni-Co amorphous alloys in alkaline solutions
title_full Electrochemical behaviour of Ni-Co amorphous alloys in alkaline solutions
title_fullStr Electrochemical behaviour of Ni-Co amorphous alloys in alkaline solutions
title_full_unstemmed Electrochemical behaviour of Ni-Co amorphous alloys in alkaline solutions
title_sort Electrochemical behaviour of Ni-Co amorphous alloys in alkaline solutions
dc.creator.none.fl_str_mv Barbosa, M. R.
Gassa, Liliana Mabel
Ruiz, Elsa Rosa
author Barbosa, M. R.
author_facet Barbosa, M. R.
Gassa, Liliana Mabel
Ruiz, Elsa Rosa
author_role author
author2 Gassa, Liliana Mabel
Ruiz, Elsa Rosa
author2_role author
author
dc.subject.none.fl_str_mv Ciencias Exactas
Química
Ni-Co alloys
Amorphous alloys
Electrochemistry
Electrochemical impedance spectroscopy
X-ray photoelectron spectroscopy
topic Ciencias Exactas
Química
Ni-Co alloys
Amorphous alloys
Electrochemistry
Electrochemical impedance spectroscopy
X-ray photoelectron spectroscopy
dc.description.none.fl_txt_mv The dissolution processes of amorphous G15 (Ni₅₈Co₂₀B₁₂Si₁₀) and G16 (Ni₂₅Co₅₀B₁₀Si₁₅) alloys in carbonate-bicarbonate buffers (8.9 ≤ pH ≤ 10.5) have been studied using voltammetry and stationary polarization techniques combined with electrochemical impedance spectroscopy and X-ray photoelectron spectroscopy (XPS) measurements. Results indicate that the electrochemical processes are dependent on the applied potential, the alloy composition, and the pH and ionic strength of the electrolyte. An enhancement of the corrosion processes is observed when the pH and the ionic strength are increased and when the Co content of the alloy diminishes. Furthermore, XPS provided information about the composition of the surface layer.
Facultad de Ciencias Exactas
Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas
description The dissolution processes of amorphous G15 (Ni₅₈Co₂₀B₁₂Si₁₀) and G16 (Ni₂₅Co₅₀B₁₀Si₁₅) alloys in carbonate-bicarbonate buffers (8.9 ≤ pH ≤ 10.5) have been studied using voltammetry and stationary polarization techniques combined with electrochemical impedance spectroscopy and X-ray photoelectron spectroscopy (XPS) measurements. Results indicate that the electrochemical processes are dependent on the applied potential, the alloy composition, and the pH and ionic strength of the electrolyte. An enhancement of the corrosion processes is observed when the pH and the ionic strength are increased and when the Co content of the alloy diminishes. Furthermore, XPS provided information about the composition of the surface layer.
publishDate 2001
dc.date.none.fl_str_mv 2001-12
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/10915/131821
url http://sedici.unlp.edu.ar/handle/10915/131821
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/1432-8488
info:eu-repo/semantics/altIdentifier/issn/1433-0768
info:eu-repo/semantics/altIdentifier/doi/10.1007/s100080000189
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
1-7
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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