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Corroded area after 100 cycles of a cyclic corrosion test as a function of time for the low-frequency impedance to drop to 107 W. Four different substrates with different coatings were tested.
Figure 4
In-Situ Sensor to Detect Moisture Intrusion and Degradation of Coatings, Composites, and Adhesive Bonds, G.D. Davis, C.M. Dacres, and L.A. Krebs, DACCO SCI Inc.