Cerium oxide thin films obtained by cathodic electrodeposition on 2024 aluminium alloy have been studied.The coatings, obtained with electrochemical deposition, offer an effective corrosion protection and require a lower deposition time when compared to chemical conversion coatings. The coatings were obtained at room temperature by deposition from CeCl3/H 2O2 aqueous solutions and the influence of several parameters (CeCl3 concentration, H2O2 concentration, deposition time, current intensity) on the corrosion resistance was studied. The composition, morphology and microstructure of the films have been characterized by SEM, XPS and AFM. The corrosion resistance was investigated through potentiodynamic tests in 3% NaCl solution.
Effect of cathodic electrodeposition parameters of cerium oxide film on thecorrosion resistance of the aluminum alloy AA2024
BRUNELLI, KATYA;MAGRINI, MAURIZIO;DABALA', MANUELE
2009
Abstract
Cerium oxide thin films obtained by cathodic electrodeposition on 2024 aluminium alloy have been studied.The coatings, obtained with electrochemical deposition, offer an effective corrosion protection and require a lower deposition time when compared to chemical conversion coatings. The coatings were obtained at room temperature by deposition from CeCl3/H 2O2 aqueous solutions and the influence of several parameters (CeCl3 concentration, H2O2 concentration, deposition time, current intensity) on the corrosion resistance was studied. The composition, morphology and microstructure of the films have been characterized by SEM, XPS and AFM. The corrosion resistance was investigated through potentiodynamic tests in 3% NaCl solution.Pubblicazioni consigliate
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