Figure 12.
SEM micrographs of the mild steel surface (a) freshly abraded, (b) retrieved from 5% HCl, (c) retrieved from 5% HCl + ZnO/PEG, (d) retrieved from 5% HCl + ZnO/PVP, and (e) retrieved from 5% HCl + ZnO/PAN, after 24 h immersion.
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