Impedance of metastable pitting corrosion |
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| Authors: | S. Krakowiak K. Darowicki P. Ślepski |
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| Affiliation: | Department of Electrochemistry, Corrosion and Materials Engineering, Gdansk University of Technology, 11/12 Narutowicza Str., 80-952 Gdańsk, Poland |
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| Abstract: | A metastable pitting corrosion impedance investigation has been performed. The shape of the dc current is connected with the shape of the impedance diagram. The corrosion rate inside an active pit is charge transfer controlled. The active surface area expansion is proportional to the double layer capacity changes. Changes of the electrolyte resistance inside the pit have been detected. |
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| Keywords: | Pitting corrosion Stainless steels Dynamic electrochemical impedance spectroscopy Metastable pitting corrosion |
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