corr] is the difference between corrosion potentials
, and [[beta].
The corrosion current density (Icr) and corrosion potential
(Ecr) were determined from the Tafel plots of potential versus log I.
The corrosion potential
difference of Zn and Zn-Al-ST was about 0.
The corrosion current densities (Icorr) were obtained from the polarization curves by extrapolation of the cathodic branch of the polarization curves to the corrosion potential
When the electrode was immersed in the solution for 8 h, the corrosion potentials
of the electrode at different solutions were higher than the corrosion potential
at initial immersion time (initial time is when the electrode was first immersed into the solution and achieved stabilization).
The electrochemical parameters including corrosion potential
All the potentiodynamic polarization studies were conducted after stabilization of the free corrosion potential
4 is that the corrosion potential
is more negative than the coating produced in the electrolyte without Ce[Cl.
These results are in excellent agreement with Shibata et al  who showed that maximum benefit of nitric acid treatment was associated with the attainment of an optimum corrosion potential
Then, corrosion potential
maps of a previously selected 1 cm2 area of the zinc surface under the paint were obtained for each lot using a Kelvin Probe.
35) The corrosion potential
and corrosion current density for the Ni/SiC nanocomposite coating, obtained from the polarization curves were -0.
3] Hz) were performed in the potentiostatic mode, at the corrosion potential