A comparative study on the passivation and localized corrosion of α- and β-brass in borate buffer solutions containing sodium chloride : II. X-ray photoelectron and Auger electron spectroscopy data

The composition of corrosion layers formed on α-, β- and (α + β)-brass anodized in the passive region in borate-boric acid buffer and 0.5 M NaCl + borate-boric acid buffer (pH 9) was studied comparatively by X-ray photo-electron and Auger electron spectroscopy. Passivation of brass in both solutions...

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Autores principales: Morales, Jose Carlos, Esparza, Pedro, Fernández, Guillermina T., González, Sergio G., García, J. E., Cáceres, J. M., Salvarezza, Roberto Carlos, Arvia, Alejandro Jorge
Formato: Articulo
Lenguaje:Inglés
Publicado: 1995
Materias:
Ciencias Exactas
Química
Corrosión
Boratos
Cloruro de Sodio
Espectroscopía de Fotoelectrones
Electrones
Electroquímica
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/82240
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-82240
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Exactas
Química
Corrosión
Boratos
Cloruro de Sodio
Espectroscopía de Fotoelectrones
Electrones
Electroquímica
spellingShingle Ciencias Exactas
Química
Corrosión
Boratos
Cloruro de Sodio
Espectroscopía de Fotoelectrones
Electrones
Electroquímica
Morales, Jose Carlos
Esparza, Pedro
Fernández, Guillermina T.
González, Sergio G.
García, J. E.
Cáceres, J. M.
Salvarezza, Roberto Carlos
Arvia, Alejandro Jorge
A comparative study on the passivation and localized corrosion of α- and β-brass in borate buffer solutions containing sodium chloride : II. X-ray photoelectron and Auger electron spectroscopy data
topic_facet Ciencias Exactas
Química
Corrosión
Boratos
Cloruro de Sodio
Espectroscopía de Fotoelectrones
Electrones
Electroquímica
description The composition of corrosion layers formed on α-, β- and (α + β)-brass anodized in the passive region in borate-boric acid buffer and 0.5 M NaCl + borate-boric acid buffer (pH 9) was studied comparatively by X-ray photo-electron and Auger electron spectroscopy. Passivation of brass in both solutions involves the formation of a complex passive layer consisting of ZnO and Cu<sub>2</sub>O. In both solutions, the ZnO electroformation results in a dezincification so that a thin Cu rich layer is formed at the alloy/metal oxide interface. Passive layer composition and dezincification of the alloy surface explain the localized corrosion resistance of brass as compared to polycrystalline Cu and Zn.
format Articulo
Articulo
author Morales, Jose Carlos
Esparza, Pedro
Fernández, Guillermina T.
González, Sergio G.
García, J. E.
Cáceres, J. M.
Salvarezza, Roberto Carlos
Arvia, Alejandro Jorge
author_facet Morales, Jose Carlos
Esparza, Pedro
Fernández, Guillermina T.
González, Sergio G.
García, J. E.
Cáceres, J. M.
Salvarezza, Roberto Carlos
Arvia, Alejandro Jorge
author_sort Morales, Jose Carlos
title A comparative study on the passivation and localized corrosion of α- and β-brass in borate buffer solutions containing sodium chloride : II. X-ray photoelectron and Auger electron spectroscopy data
title_short A comparative study on the passivation and localized corrosion of α- and β-brass in borate buffer solutions containing sodium chloride : II. X-ray photoelectron and Auger electron spectroscopy data
title_full A comparative study on the passivation and localized corrosion of α- and β-brass in borate buffer solutions containing sodium chloride : II. X-ray photoelectron and Auger electron spectroscopy data
title_fullStr A comparative study on the passivation and localized corrosion of α- and β-brass in borate buffer solutions containing sodium chloride : II. X-ray photoelectron and Auger electron spectroscopy data
title_full_unstemmed A comparative study on the passivation and localized corrosion of α- and β-brass in borate buffer solutions containing sodium chloride : II. X-ray photoelectron and Auger electron spectroscopy data
title_sort comparative study on the passivation and localized corrosion of α- and β-brass in borate buffer solutions containing sodium chloride : ii. x-ray photoelectron and auger electron spectroscopy data
publishDate 1995
url http://sedici.unlp.edu.ar/handle/10915/82240
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