Simulation of the Relaxation Potential Profile of an ac-dc-ac Test

Figure 4

Solution potential as a function of distance from the metal surface across the coating and electrolyte for a 0.1 mm thick, 0.02 porosity coating. Included are the steady state distributions at −1.34 V and −1.9 V and the transient distributions at 2 min and 30 min after the applied potential of −1.9 V was switched off.