The growth kinetics and properties of potentiodynamically formed thin oxide films on aluminium in citric acid solutions
作者： D. Hasenay , M. Šeruga
DOI: 10.1007/S10800-007-9339-8
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摘要: The growth kinetics and properties of potentiodynamically formed thin oxide films on Al were investigated in 0.05 M citric acid solutions different pH (5, 6 7) by means potentiodynamic polarization a.c. electrochemical impedance spectroscopy (EIS) measurements. showed passive behaviour within the range that was examined. film takes place due to ionic conductivity under influence high electric field. Characteristic kinetic parameters such as high-field exponential law constants (A B), through film, field strength half barrier width have been calculated. Impedance measurements used determine related characteristic sizes film. capacitive response spectrum thickness dielectric resistance values very high, indicating conditions are highly uniform resistant. anodic characterized rapid which diminished relaxation processes structural characteristics aluminium/anodic film/electrolyte system.
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