A comparative study on the passivation and localized corrosion of α, β, and α + β brass in borate buffer solutions containing sodium chloride : I. Electrochemical data
- Autores
- Morales, Jose Carlos; Fernández, Guillermina T.; Esparza, Pedro; González, Sergio G.; Salvarezza, Roberto Carlos; Arvia, Alejandro Jorge
- Año de publicación
- 1995
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- The passivation and localized corrosion of α-, β-, and (α + β)-brass in borate-boric acid buffer solutions (pH 9) containing different NaCl concentrations (cNaCl) were studied comparatively using conventional electrochemical techniques at 25 °C. The passivation of brass in borate-boric acid buffer was due to the electroformation of a complex passive layer consisting of ZnO · xH2O and Cu2O—CuO. In NaCl-containing borate-boric acid buffer the breakdown of the passive layer occurs leading to pitting corrosion when the applied potential exceeds a certain critical value, Eb. For a given type of brass, the value of Eb is shifted negatively as cNaCl is increased. At a constant cNaCl the localized corrosion resistance of brass increases in the following order (α + β)-brass ≅ β-brass < α-brass. For all brass the localized corrosion resistance was lower than that of polycrystalline Cu, but considerably greater than that of polycrystalline Zn. Passive film composition and de-alloying can account for the localized corrosion resistance of these alloys.
Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas
Facultad de Ciencias Exactas - Materia
-
Ciencias Exactas
Química
Boratos
Cloruro de Sodio
Electroquímica
Corrosión
Boricum Acidum
Ácidos Bóricos
Técnicas Electroquímicas - 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:10915/80404
Ver los metadatos del registro completo
id |
SEDICI_b2aa5e800851e607996c2cdde737f40f |
---|---|
oai_identifier_str |
oai:sedici.unlp.edu.ar:10915/80404 |
network_acronym_str |
SEDICI |
repository_id_str |
1329 |
network_name_str |
SEDICI (UNLP) |
spelling |
A comparative study on the passivation and localized corrosion of α, β, and α + β brass in borate buffer solutions containing sodium chloride : I. Electrochemical dataMorales, Jose CarlosFernández, Guillermina T.Esparza, PedroGonzález, Sergio G.Salvarezza, Roberto CarlosArvia, Alejandro JorgeCiencias ExactasQuímicaBoratosCloruro de SodioElectroquímicaCorrosiónBoricum AcidumÁcidos BóricosTécnicas ElectroquímicasThe passivation and localized corrosion of α-, β-, and (α + β)-brass in borate-boric acid buffer solutions (pH 9) containing different NaCl concentrations (c<sub>NaCl</sub>) were studied comparatively using conventional electrochemical techniques at 25 °C. The passivation of brass in borate-boric acid buffer was due to the electroformation of a complex passive layer consisting of ZnO · xH<sub>2</sub>O and Cu<sub>2</sub>O—CuO. In NaCl-containing borate-boric acid buffer the breakdown of the passive layer occurs leading to pitting corrosion when the applied potential exceeds a certain critical value, E<sub>b</sub>. For a given type of brass, the value of E<sub>b</sub> is shifted negatively as c<sub>NaCl</sub> is increased. At a constant c<sub>NaCl</sub> the localized corrosion resistance of brass increases in the following order (α + β)-brass ≅ β-brass < α-brass. For all brass the localized corrosion resistance was lower than that of polycrystalline Cu, but considerably greater than that of polycrystalline Zn. Passive film composition and de-alloying can account for the localized corrosion resistance of these alloys.Instituto de Investigaciones Fisicoquímicas Teóricas y AplicadasFacultad de Ciencias Exactas1995-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf211-229http://sedici.unlp.edu.ar/handle/10915/80404enginfo:eu-repo/semantics/altIdentifier/issn/0010-938Xinfo:eu-repo/semantics/altIdentifier/doi/10.1016/0010-938X(94)00108-Iinfo: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:UNLP2025-09-29T11:14:47Zoai:sedici.unlp.edu.ar:10915/80404Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:14:47.96SEDICI (UNLP) - Universidad Nacional de La Platafalse |
dc.title.none.fl_str_mv |
A comparative study on the passivation and localized corrosion of α, β, and α + β brass in borate buffer solutions containing sodium chloride : I. Electrochemical data |
title |
A comparative study on the passivation and localized corrosion of α, β, and α + β brass in borate buffer solutions containing sodium chloride : I. Electrochemical data |
spellingShingle |
A comparative study on the passivation and localized corrosion of α, β, and α + β brass in borate buffer solutions containing sodium chloride : I. Electrochemical data Morales, Jose Carlos Ciencias Exactas Química Boratos Cloruro de Sodio Electroquímica Corrosión Boricum Acidum Ácidos Bóricos Técnicas Electroquímicas |
title_short |
A comparative study on the passivation and localized corrosion of α, β, and α + β brass in borate buffer solutions containing sodium chloride : I. Electrochemical data |
title_full |
A comparative study on the passivation and localized corrosion of α, β, and α + β brass in borate buffer solutions containing sodium chloride : I. Electrochemical data |
title_fullStr |
A comparative study on the passivation and localized corrosion of α, β, and α + β brass in borate buffer solutions containing sodium chloride : I. Electrochemical data |
title_full_unstemmed |
A comparative study on the passivation and localized corrosion of α, β, and α + β brass in borate buffer solutions containing sodium chloride : I. Electrochemical data |
title_sort |
A comparative study on the passivation and localized corrosion of α, β, and α + β brass in borate buffer solutions containing sodium chloride : I. Electrochemical data |
dc.creator.none.fl_str_mv |
Morales, Jose Carlos Fernández, Guillermina T. Esparza, Pedro González, Sergio G. Salvarezza, Roberto Carlos Arvia, Alejandro Jorge |
author |
Morales, Jose Carlos |
author_facet |
Morales, Jose Carlos Fernández, Guillermina T. Esparza, Pedro González, Sergio G. Salvarezza, Roberto Carlos Arvia, Alejandro Jorge |
author_role |
author |
author2 |
Fernández, Guillermina T. Esparza, Pedro González, Sergio G. Salvarezza, Roberto Carlos Arvia, Alejandro Jorge |
author2_role |
author author author author author |
dc.subject.none.fl_str_mv |
Ciencias Exactas Química Boratos Cloruro de Sodio Electroquímica Corrosión Boricum Acidum Ácidos Bóricos Técnicas Electroquímicas |
topic |
Ciencias Exactas Química Boratos Cloruro de Sodio Electroquímica Corrosión Boricum Acidum Ácidos Bóricos Técnicas Electroquímicas |
dc.description.none.fl_txt_mv |
The passivation and localized corrosion of α-, β-, and (α + β)-brass in borate-boric acid buffer solutions (pH 9) containing different NaCl concentrations (c<sub>NaCl</sub>) were studied comparatively using conventional electrochemical techniques at 25 °C. The passivation of brass in borate-boric acid buffer was due to the electroformation of a complex passive layer consisting of ZnO · xH<sub>2</sub>O and Cu<sub>2</sub>O—CuO. In NaCl-containing borate-boric acid buffer the breakdown of the passive layer occurs leading to pitting corrosion when the applied potential exceeds a certain critical value, E<sub>b</sub>. For a given type of brass, the value of E<sub>b</sub> is shifted negatively as c<sub>NaCl</sub> is increased. At a constant c<sub>NaCl</sub> the localized corrosion resistance of brass increases in the following order (α + β)-brass ≅ β-brass < α-brass. For all brass the localized corrosion resistance was lower than that of polycrystalline Cu, but considerably greater than that of polycrystalline Zn. Passive film composition and de-alloying can account for the localized corrosion resistance of these alloys. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas Facultad de Ciencias Exactas |
description |
The passivation and localized corrosion of α-, β-, and (α + β)-brass in borate-boric acid buffer solutions (pH 9) containing different NaCl concentrations (c<sub>NaCl</sub>) were studied comparatively using conventional electrochemical techniques at 25 °C. The passivation of brass in borate-boric acid buffer was due to the electroformation of a complex passive layer consisting of ZnO · xH<sub>2</sub>O and Cu<sub>2</sub>O—CuO. In NaCl-containing borate-boric acid buffer the breakdown of the passive layer occurs leading to pitting corrosion when the applied potential exceeds a certain critical value, E<sub>b</sub>. For a given type of brass, the value of E<sub>b</sub> is shifted negatively as c<sub>NaCl</sub> is increased. At a constant c<sub>NaCl</sub> the localized corrosion resistance of brass increases in the following order (α + β)-brass ≅ β-brass < α-brass. For all brass the localized corrosion resistance was lower than that of polycrystalline Cu, but considerably greater than that of polycrystalline Zn. Passive film composition and de-alloying can account for the localized corrosion resistance of these alloys. |
publishDate |
1995 |
dc.date.none.fl_str_mv |
1995-02 |
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/10915/80404 |
url |
http://sedici.unlp.edu.ar/handle/10915/80404 |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/issn/0010-938X info:eu-repo/semantics/altIdentifier/doi/10.1016/0010-938X(94)00108-I |
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 211-229 |
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 |
_version_ |
1844616019542278144 |
score |
13.070432 |