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In situ electrochemical impedance spectroscopy was used to study the characteristics of the passive film formed potentiodynamically on copper, in slightly alkaline solution. This film has semiconducting properties. A strong correlation was established between the impedance and the changes in the composition and structure of the passive film. Several parameters were examined, such as: the ionic resistivity, of the dielectric constant, of and the concentration of charge carriers of © 2001 The Electrochemical Society. All rights reserved.
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Babić et al. (2001) studied this question.
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