“…18,19 At pH value of 5.8 in 3 M NaCl or Na 2 SO 4 , according to Baugh, 19 the zinc electrode is coated with an oxide film, this film may affect both the anodic and the cathodic process but is not passivating. In addition Sziraki 20 reported that the dissolution-deposition exchange reaction of zinc alloy coating gives rise to an active surface in two ways. First, there are a large number of active sites for dissolution and, second, there are probably many oxide nuclei available for further grain growth.…”