Fig. 9: Time-lapse Microscopy images of Zn-3Mg-1Al taken under immersion conditions in 0.17 mol.L^-1 NaCl pH 7 solution.

The images taken at (a) 0 min (b) 25 min (c) 50 min (d) 75 min and e 100 min show the initiation and progression of an anode over the first 100 min of exposure.