INIFTA   05425
INSTITUTO DE INVESTIGACIONES FISICO-QUIMICAS TEORICAS Y APLICADAS
Unidad Ejecutora - UE
artículos
Título:
The Electrochemical Dissolution of Cobalt In Carbonate/Bicarbonate Solutions From EIS and Steady Polarization Data
Autor/es:
S.G. REAL, S.B. RIBOTTA AND A.J. ARVIA
Revista:
CORROSION SCIENCE
Editorial:
Elsevier
Referencias:
Año: 2008 vol. 50 p. 463 - 472
ISSN:
0010-938X
Resumen:
Abstract
The cobalt electrodissolution process in carbonatebicarbonate containing solutions 8.9 6 pH 6 10.5 covering relatively wide ranges
of ionic strength, pH, and hydrodynamic conditions, has been investigated using electrochemical impedance spectroscopy (EIS) and
steady polarization data. To distinguish the competing stages of the metal electrodissolution mechanism a cobalt rotating disc electrode
was utilized. The proposed mechanism model consists of the formation of adsorbed Co(I) intermediate species followed by mass-transport
contributions of soluble Co(II) ions as final products. The coherence of the proposed mechanisms with EIS and steady polarization
data is presented
of ionic strength, pH, and hydrodynamic conditions, has been investigated using electrochemical impedance spectroscopy (EIS) and
steady polarization data. To distinguish the competing stages of the metal electrodissolution mechanism a cobalt rotating disc electrode
was utilized. The proposed mechanism model consists of the formation of adsorbed Co(I) intermediate species followed by mass-transport
contributions of soluble Co(II) ions as final products. The coherence of the proposed mechanisms with EIS and steady polarization
data is presented
6 pH 6 10.5 covering relatively wide ranges
of ionic strength, pH, and hydrodynamic conditions, has been investigated using electrochemical impedance spectroscopy (EIS) and
steady polarization data. To distinguish the competing stages of the metal electrodissolution mechanism a cobalt rotating disc electrode
was utilized. The proposed mechanism model consists of the formation of adsorbed Co(I) intermediate species followed by mass-transport
contributions of soluble Co(II) ions as final products. The coherence of the proposed mechanisms with EIS and steady polarization
data is presented