Artículo
Electrodeposition in highly viscous media: Experiments and simulations
Gutman Grinbank, S.; Díaz Costanzo, Guadalupe
; Soba, Alejandro
; González, Graciela Alicia
; Marshall, Guillermo Ricardo
Fecha de publicación:
07/2009
Editorial:
Elsevier Science
Revista:
Journal Of Electrostatics
ISSN:
0304-3886
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Electrolyte viscosity plays an important role in ion transport. Here we study the effects of high viscosity variations in thin-layer electrochemical deposition (ECD) under constant-current conditions through experimental measurements and theoretical modelling. The viscosity was varied through glycerol and polymer additions and the tracking of convective fronts was performed through the use of optical and particle image velocimetry techniques with micron sized particles. The theoretical model, written in terms of dimensionless quantities, describes diffusive, migratory and convective ion transport in a fluid under constant-current conditions. Experiments reveal that as viscosity increases, convection decreases, while concentration gradients increase. These effects are more pronounced when the current increases. Theory and simulations predict that as viscosity increases, the Poisson and Reynolds numbers decrease whereas the Peclet and electric Grashof numbers increase. Therefore, electroconvection becomes more relevant.
Palabras clave:
Electrodeposition
,
Ion Transport
,
Numerical Simulations
,
Viscosity
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Articulos(INQUIMAE)
Articulos de INST.D/QUIM FIS D/L MATERIALES MEDIOAMB Y ENERGIA
Articulos de INST.D/QUIM FIS D/L MATERIALES MEDIOAMB Y ENERGIA
Citación
Gutman Grinbank, S. ; Díaz Costanzo, Guadalupe; Soba, Alejandro; González, Graciela Alicia; Marshall, Guillermo Ricardo; Electrodeposition in highly viscous media: Experiments and simulations; Elsevier Science; Journal Of Electrostatics; 67; 4; 7-2009; 672-677
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