The anodic behaviour of nickel in molten sodium-nitrate-potassium-nitrate eutectic
- Autores
- Arvia, Alejandro Jorge; Piatti, Roberto C. V.; Podestá, José J.
- Año de publicación
- 1972
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- The kinetic behaviour of nickel anodes immersed in molten sodium-nitrate-potassium-nitrate eutectic has been investigated in the temperature range 244-314°C with steady and non-steady electrochemical methods. The metal passivates by formation of a NiO layer of an average thickness 11 A. A characteristic passivation potential is established, probably associated to a mixed potential, the over-all reaction being 2(Na, K)NO3 + Ni = NiO + 2NO2 + (Na, K)2O. Beyond the passivity region the dissolution of the passive film occurs, at an anode potential where both NOI- and oxide ions are able to discharge. The likely over-all electrochemical processes are envisaged with the aid of potential/p04- diagrams. The considerably changing electrode roughness make a mechanistic interpretation of the anodic processes very uncertain at present.
Facultad de Ciencias Exactas - Materia
- Química
- Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by-nc-sa/4.0/
- Repositorio
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/167509
Ver los metadatos del registro completo
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spelling |
The anodic behaviour of nickel in molten sodium-nitrate-potassium-nitrate eutecticArvia, Alejandro JorgePiatti, Roberto C. V.Podestá, José J.QuímicaThe kinetic behaviour of nickel anodes immersed in molten sodium-nitrate-potassium-nitrate eutectic has been investigated in the temperature range 244-314°C with steady and non-steady electrochemical methods. The metal passivates by formation of a NiO layer of an average thickness 11 A. A characteristic passivation potential is established, probably associated to a mixed potential, the over-all reaction being 2(Na, K)NO<SUB>3</SUB> + Ni = NiO + 2NO<SUB>2</SUB> + (Na, K)<SUB>2</SUB>O. Beyond the passivity region the dissolution of the passive film occurs, at an anode potential where both NOI- and oxide ions are able to discharge. The likely over-all electrochemical processes are envisaged with the aid of potential/p04- diagrams. The considerably changing electrode roughness make a mechanistic interpretation of the anodic processes very uncertain at present.Facultad de Ciencias Exactas1972info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf901-913http://sedici.unlp.edu.ar/handle/10915/167509enginfo: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:UNLP2025-09-29T11:44:36Zoai:sedici.unlp.edu.ar:10915/167509Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:44:36.748SEDICI (UNLP) - Universidad Nacional de La Platafalse |
dc.title.none.fl_str_mv |
The anodic behaviour of nickel in molten sodium-nitrate-potassium-nitrate eutectic |
title |
The anodic behaviour of nickel in molten sodium-nitrate-potassium-nitrate eutectic |
spellingShingle |
The anodic behaviour of nickel in molten sodium-nitrate-potassium-nitrate eutectic Arvia, Alejandro Jorge Química |
title_short |
The anodic behaviour of nickel in molten sodium-nitrate-potassium-nitrate eutectic |
title_full |
The anodic behaviour of nickel in molten sodium-nitrate-potassium-nitrate eutectic |
title_fullStr |
The anodic behaviour of nickel in molten sodium-nitrate-potassium-nitrate eutectic |
title_full_unstemmed |
The anodic behaviour of nickel in molten sodium-nitrate-potassium-nitrate eutectic |
title_sort |
The anodic behaviour of nickel in molten sodium-nitrate-potassium-nitrate eutectic |
dc.creator.none.fl_str_mv |
Arvia, Alejandro Jorge Piatti, Roberto C. V. Podestá, José J. |
author |
Arvia, Alejandro Jorge |
author_facet |
Arvia, Alejandro Jorge Piatti, Roberto C. V. Podestá, José J. |
author_role |
author |
author2 |
Piatti, Roberto C. V. Podestá, José J. |
author2_role |
author author |
dc.subject.none.fl_str_mv |
Química |
topic |
Química |
dc.description.none.fl_txt_mv |
The kinetic behaviour of nickel anodes immersed in molten sodium-nitrate-potassium-nitrate eutectic has been investigated in the temperature range 244-314°C with steady and non-steady electrochemical methods. The metal passivates by formation of a NiO layer of an average thickness 11 A. A characteristic passivation potential is established, probably associated to a mixed potential, the over-all reaction being 2(Na, K)NO<SUB>3</SUB> + Ni = NiO + 2NO<SUB>2</SUB> + (Na, K)<SUB>2</SUB>O. Beyond the passivity region the dissolution of the passive film occurs, at an anode potential where both NOI- and oxide ions are able to discharge. The likely over-all electrochemical processes are envisaged with the aid of potential/p04- diagrams. The considerably changing electrode roughness make a mechanistic interpretation of the anodic processes very uncertain at present. Facultad de Ciencias Exactas |
description |
The kinetic behaviour of nickel anodes immersed in molten sodium-nitrate-potassium-nitrate eutectic has been investigated in the temperature range 244-314°C with steady and non-steady electrochemical methods. The metal passivates by formation of a NiO layer of an average thickness 11 A. A characteristic passivation potential is established, probably associated to a mixed potential, the over-all reaction being 2(Na, K)NO<SUB>3</SUB> + Ni = NiO + 2NO<SUB>2</SUB> + (Na, K)<SUB>2</SUB>O. Beyond the passivity region the dissolution of the passive film occurs, at an anode potential where both NOI- and oxide ions are able to discharge. The likely over-all electrochemical processes are envisaged with the aid of potential/p04- diagrams. The considerably changing electrode roughness make a mechanistic interpretation of the anodic processes very uncertain at present. |
publishDate |
1972 |
dc.date.none.fl_str_mv |
1972 |
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/10915/167509 |
url |
http://sedici.unlp.edu.ar/handle/10915/167509 |
dc.language.none.fl_str_mv |
eng |
language |
eng |
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 901-913 |
dc.source.none.fl_str_mv |
reponame:SEDICI (UNLP) instname:Universidad Nacional de La Plata instacron:UNLP |
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SEDICI (UNLP) |
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SEDICI (UNLP) |
instname_str |
Universidad Nacional de La Plata |
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UNLP |
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SEDICI (UNLP) - Universidad Nacional de La Plata |
repository.mail.fl_str_mv |
alira@sedici.unlp.edu.ar |
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score |
13.070432 |