(a) Net ZRA current density recorded over time for the CMEA arranged in a fastener geometry where solid lines represent the current for AA7050 electrodes and dotted lines represent the current for the Type 316 stainless steel electrodes. (b) CMEA net current without the RH cycle data. The key at the bottom shows the position of each wire in the array. The CMEA was exposed to a 0.6 M NaCl 70 μm thin film for 24 h under a wet/dry cycle at 30°C with a small gap of ∼100 μm between the AA7050 and the steel fastener. The cycle was 30 min at 95% RH and 3.5 h at 30% RH at a temperature of 30°C.