Electrochemical behaviour of copper in potassium thiocyanate solution : II. Analysis of potentiostatic current transients

Autores
Figueroa, M. G.; Fernández Lorenzo de Mele, Mónica Alicia; Salvarezza, Roberto Carlos; Arvia, Alejandro Jorge
Año de publicación
1987
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The kinetics of passivity and pitting corrosion of copper in borate-boric acid buffer containing potassium thiocyanate is studied at 25°C by means of potentiostatic transients recorded at different constant potential values. Three different potential regions are distinguished. Region I, as the applied potential is increased, implies the successive formation of cuprous thiocyanate, cuprous and cupric oxide. This corresponds to the formation of a composite anodic layer. Region II extends from the potential of the third anodic voltammetric peak up to the breakdown potential. Region III involves the breakdown of the passive layer caused by thiocyanate ions, and the formation of different copper salts in the pits. The kinetics of the various stages is discussed in terms of an extension of the nucleation and growth mechanism following an approach which was earlier applied for explaining the initiation and growth of pitting corrosion of metals.
Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas
Materia
Ciencias Exactas
Química
Copper
Potassium thiocyanate
Potentiostatic current transients
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/119434
Acceder
id SEDICI_f3bb082027c184dd742a8c0457628eb6
oai_identifier_str oai:sedici.unlp.edu.ar:10915/119434
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Electrochemical behaviour of copper in potassium thiocyanate solution : II. Analysis of potentiostatic current transientsFigueroa, M. G.Fernández Lorenzo de Mele, Mónica AliciaSalvarezza, Roberto CarlosArvia, Alejandro JorgeCiencias ExactasQuímicaCopperPotassium thiocyanatePotentiostatic current transientsThe kinetics of passivity and pitting corrosion of copper in borate-boric acid buffer containing potassium thiocyanate is studied at 25°C by means of potentiostatic transients recorded at different constant potential values. Three different potential regions are distinguished. Region I, as the applied potential is increased, implies the successive formation of cuprous thiocyanate, cuprous and cupric oxide. This corresponds to the formation of a composite anodic layer. Region II extends from the potential of the third anodic voltammetric peak up to the breakdown potential. Region III involves the breakdown of the passive layer caused by thiocyanate ions, and the formation of different copper salts in the pits. The kinetics of the various stages is discussed in terms of an extension of the nucleation and growth mechanism following an approach which was earlier applied for explaining the initiation and growth of pitting corrosion of metals.Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas1987info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf231-238http://sedici.unlp.edu.ar/handle/10915/119434enginfo:eu-repo/semantics/altIdentifier/issn/0013-4686info:eu-repo/semantics/altIdentifier/doi/10.1016/0013-4686(87)85029-6info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/Creative Commons Attribution 4.0 International (CC BY 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:28:10Zoai:sedici.unlp.edu.ar:10915/119434Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:28:10.79SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Electrochemical behaviour of copper in potassium thiocyanate solution : II. Analysis of potentiostatic current transients
title Electrochemical behaviour of copper in potassium thiocyanate solution : II. Analysis of potentiostatic current transients
spellingShingle Electrochemical behaviour of copper in potassium thiocyanate solution : II. Analysis of potentiostatic current transients
Figueroa, M. G.
Ciencias Exactas
Química
Copper
Potassium thiocyanate
Potentiostatic current transients
title_short Electrochemical behaviour of copper in potassium thiocyanate solution : II. Analysis of potentiostatic current transients
title_full Electrochemical behaviour of copper in potassium thiocyanate solution : II. Analysis of potentiostatic current transients
title_fullStr Electrochemical behaviour of copper in potassium thiocyanate solution : II. Analysis of potentiostatic current transients
title_full_unstemmed Electrochemical behaviour of copper in potassium thiocyanate solution : II. Analysis of potentiostatic current transients
title_sort Electrochemical behaviour of copper in potassium thiocyanate solution : II. Analysis of potentiostatic current transients
dc.creator.none.fl_str_mv Figueroa, M. G.
Fernández Lorenzo de Mele, Mónica Alicia
Salvarezza, Roberto Carlos
Arvia, Alejandro Jorge
author Figueroa, M. G.
author_facet Figueroa, M. G.
Fernández Lorenzo de Mele, Mónica Alicia
Salvarezza, Roberto Carlos
Arvia, Alejandro Jorge
author_role author
author2 Fernández Lorenzo de Mele, Mónica Alicia
Salvarezza, Roberto Carlos
Arvia, Alejandro Jorge
author2_role author
author
author
dc.subject.none.fl_str_mv Ciencias Exactas
Química
Copper
Potassium thiocyanate
Potentiostatic current transients
topic Ciencias Exactas
Química
Copper
Potassium thiocyanate
Potentiostatic current transients
dc.description.none.fl_txt_mv The kinetics of passivity and pitting corrosion of copper in borate-boric acid buffer containing potassium thiocyanate is studied at 25°C by means of potentiostatic transients recorded at different constant potential values. Three different potential regions are distinguished. Region I, as the applied potential is increased, implies the successive formation of cuprous thiocyanate, cuprous and cupric oxide. This corresponds to the formation of a composite anodic layer. Region II extends from the potential of the third anodic voltammetric peak up to the breakdown potential. Region III involves the breakdown of the passive layer caused by thiocyanate ions, and the formation of different copper salts in the pits. The kinetics of the various stages is discussed in terms of an extension of the nucleation and growth mechanism following an approach which was earlier applied for explaining the initiation and growth of pitting corrosion of metals.
Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas
description The kinetics of passivity and pitting corrosion of copper in borate-boric acid buffer containing potassium thiocyanate is studied at 25°C by means of potentiostatic transients recorded at different constant potential values. Three different potential regions are distinguished. Region I, as the applied potential is increased, implies the successive formation of cuprous thiocyanate, cuprous and cupric oxide. This corresponds to the formation of a composite anodic layer. Region II extends from the potential of the third anodic voltammetric peak up to the breakdown potential. Region III involves the breakdown of the passive layer caused by thiocyanate ions, and the formation of different copper salts in the pits. The kinetics of the various stages is discussed in terms of an extension of the nucleation and growth mechanism following an approach which was earlier applied for explaining the initiation and growth of pitting corrosion of metals.
publishDate 1987
dc.date.none.fl_str_mv 1987
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/10915/119434
url http://sedici.unlp.edu.ar/handle/10915/119434
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(87)85029-6
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
dc.format.none.fl_str_mv application/pdf
231-238
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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score 13.070432

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