Artículo
Theoretical and experimental study of the interaction of O2 and H2O with metallic zinc: Discussion of the initial step of oxide formation
Fecha de publicación:
08/2004
Editorial:
Academic Press Inc Elsevier Science
Revista:
Journal of Colloid and Interface Science
ISSN:
0021-9797
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
The steps of Zn corrosion and ZnO formation using dry O2 or O2/water atmosphere were investigated in situ using an experimental and theoretical approach. The adsorption equilibrium and kinetics of O 2/H2O on Zn have been measured at different temperatures and relative humidities using a Cahn 1000 vacuum recording electrobalance. The amounts adsorbed on Zn are different in the presence or absence of O 2. SEM-EDAX, XPS, and XRD studies have been performed at the surface for different times of reaction. A theoretical study using the extended Hückel method has been done for the adsorption/reaction of H 2O/O2 on Zn and on ZnO. A coherent explanation is presented for the initial steps of ZnO formation on Zn, for the steady state found for the ZnO growth, and for the experimental findings of the methods cited above.
Palabras clave:
GAS PHASE
,
SPONTANEOUS CORROSION
,
ZNO FORMATION
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos(PLAPIQUI)
Articulos de PLANTA PILOTO DE INGENIERIA QUIMICA (I)
Articulos de PLANTA PILOTO DE INGENIERIA QUIMICA (I)
Citación
Alimenti, Graciela Alicia; Gschaider, María Elena; Bazan, Juliio Cesar; Ferreira, María Luján; Theoretical and experimental study of the interaction of O2 and H2O with metallic zinc: Discussion of the initial step of oxide formation; Academic Press Inc Elsevier Science; Journal of Colloid and Interface Science; 276; 1; 8-2004; 24-38
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