Abstract
The corrosion kinetics of five commercial TFS-CT plates in a number of inorganic and organic solutions of various pH values, and in some typical acidic food products, were evaluated electrochemically by means of potentiodynamic polarisation measurements. In both laboratory media and food products the corrosion process of TFS-CT plates in the absence of oxygen is definitely under cathodic control, owing to the presence of chromium oxide in the coating which depresses corrosion rates and exchange current densities for the hydrogen evolution reaction. From the anodic branches of the experimental polarisation curves, dynamic stability diagrams of TFS-CT plates. have been derived, indicating for various environmental conditions the potential ranges of practical immunity, negligible corrosion (material ‘resistant’), and unacceptable corrosion (material ‘unsuitable’), respectively.
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