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Characterisation of porous and barrier layers of anodic oxides on different aluminium alloys

AuthorsFeliú Jr., S.; González, J. A.; López, Víctor; Bartolomé, Mª. J.; Escudero, E.; Otero, Eduardo
Aluminium alloys
Issue Date2007
PublisherKluwer Academic Publishers
CitationJournal of Applied Electrochemistry 37 (9): 1027-1037 (2007)
AbstractElectrochemical impedance spectroscopy (EIS) provides a powerful tool for obtaining detailed information on the electrochemical properties of both porous and barrier layers on different aluminium alloys. The impedance value at a given frequency can serve to calculate the electrochemical parameters of the oxide layers represented by each component of the equivalent circuit (EC) which reproduces the behaviour of the studied systems. It is thus possible, with these parameters, to analyse the effects of any factor on the sealing and ageing processes of anodic aluminium oxide layers. Electrochemical results are completed with a detailed analytical study of the oxide layers by XPS, with gravimetric determinations of the changes experienced in the anodising and sealing processes, and with microstructural characterisation of the anodic films by scanning electron microscopy (SEM). © 2007 Springer Science+Business Media B.V.
Identifiersdoi: 10.1007/s10800-007-9344-y
issn: 0021-891X
Appears in Collections:(CENIM) Artículos
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