FIGURE 7.
IR-free potentials determined on ER coupons as a function of the current density (J) under AC interference of 16.7 Hz (cathodic currents with a positive sign). Disk symbols: no corrosion at Jdc 1 A/m2, Jac 128 A/m2. Square symbols: corrosion at Jdc 11 A/m2, Jac 309 A/m2 according to Bette.43 The full symbols correspond to EIR-free and the empty symbols to the most negative cathodic excursion called EH.

IR-free potentials determined on ER coupons as a function of the current density (J) under AC interference of 16.7 Hz (cathodic currents with a positive sign). Disk symbols: no corrosion at Jdc 1 A/m2, Jac 128 A/m2. Square symbols: corrosion at Jdc 11 A/m2, Jac 309 A/m2 according to Bette.43  The full symbols correspond to EIR-free and the empty symbols to the most negative cathodic excursion called EH.

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