A mechanistic approach to the electroformation of anodic layers on copper and their electroreduction in aqueous solutions containing NaHCO<sub>3</sub> and Na<sub>2</sub> CO<sub>3</sub>
The electrochemical behaviour of Cu in solutions containing Na<sub>2</sub>CO<sub>3</sub> + NaHCO<sub>3</sub> (8.8 < pH < 11 .1) has been studied using potentiodynamic and potentiostatic techniques complemented by Scanning Electron Microscopy. The initial sta...
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| Autores principales: | , , , , , |
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| Formato: | Articulo |
| Lenguaje: | Inglés |
| Publicado: |
1993
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| Materias: | |
| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/118514 |
| Aporte de: |
| id |
I19-R120-10915-118514 |
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| 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 Cu corrosion Cu anodic layers Nucleation and growth processes Solution composition Cu passivation |
| spellingShingle |
Ciencias Exactas Química Cu corrosion Cu anodic layers Nucleation and growth processes Solution composition Cu passivation Pérez Sánchez, M. Souto, R. M. Barrera, M. González, S. Salvarezza, Roberto Carlos Arvia, Alejandro Jorge A mechanistic approach to the electroformation of anodic layers on copper and their electroreduction in aqueous solutions containing NaHCO<sub>3</sub> and Na<sub>2</sub> CO<sub>3</sub> |
| topic_facet |
Ciencias Exactas Química Cu corrosion Cu anodic layers Nucleation and growth processes Solution composition Cu passivation |
| description |
The electrochemical behaviour of Cu in solutions containing Na<sub>2</sub>CO<sub>3</sub> + NaHCO<sub>3</sub> (8.8 < pH < 11 .1) has been studied using potentiodynamic and potentiostatic techniques complemented by Scanning Electron Microscopy. The initial stages of the anodic layer formation involve the electroformation of a thin inner Cu<sub>2</sub>O layer followed by the growth of a CuO/Cu(OH)<sub>2</sub>-Cu(HO)<sub>3</sub> complex outer layer. Soluble Cu(II) species were detected in the entire anodization potential range . Kinetic models devised for phase change electrochemical processes have been applied to explain the characteristics of anodic and cathodic current transients. |
| format |
Articulo Articulo |
| author |
Pérez Sánchez, M. Souto, R. M. Barrera, M. González, S. Salvarezza, Roberto Carlos Arvia, Alejandro Jorge |
| author_facet |
Pérez Sánchez, M. Souto, R. M. Barrera, M. González, S. Salvarezza, Roberto Carlos Arvia, Alejandro Jorge |
| author_sort |
Pérez Sánchez, M. |
| title |
A mechanistic approach to the electroformation of anodic layers on copper and their electroreduction in aqueous solutions containing NaHCO<sub>3</sub> and Na<sub>2</sub> CO<sub>3</sub> |
| title_short |
A mechanistic approach to the electroformation of anodic layers on copper and their electroreduction in aqueous solutions containing NaHCO<sub>3</sub> and Na<sub>2</sub> CO<sub>3</sub> |
| title_full |
A mechanistic approach to the electroformation of anodic layers on copper and their electroreduction in aqueous solutions containing NaHCO<sub>3</sub> and Na<sub>2</sub> CO<sub>3</sub> |
| title_fullStr |
A mechanistic approach to the electroformation of anodic layers on copper and their electroreduction in aqueous solutions containing NaHCO<sub>3</sub> and Na<sub>2</sub> CO<sub>3</sub> |
| title_full_unstemmed |
A mechanistic approach to the electroformation of anodic layers on copper and their electroreduction in aqueous solutions containing NaHCO<sub>3</sub> and Na<sub>2</sub> CO<sub>3</sub> |
| title_sort |
mechanistic approach to the electroformation of anodic layers on copper and their electroreduction in aqueous solutions containing nahco<sub>3</sub> and na<sub>2</sub> co<sub>3</sub> |
| publishDate |
1993 |
| url |
http://sedici.unlp.edu.ar/handle/10915/118514 |
| work_keys_str_mv |
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| bdutipo_str |
Repositorios |
| _version_ |
1764820448021839874 |