(a) Net ZRA galvanic current density recorded over time for the flat galvanic geometric array where solid lines represent the current for AA7050 electrodes, and dotted lines represent the current from Type 316 stainless steel electrodes. The RH for the wet/dry cycle is shown on the right axis. (b) CMEA net current density without the RH cycle data. The CMEA was exposed to a 0.6 M NaCl solution 70 μm thin film for 24 h under a wet/dry cycle at 50°C. The cycle was 30 min at 95% RH and 3 h at 50% RH at a higher temperature of 50°C.