The formation of corrosion products with time on zinc anode reduced the voltage and current in galvanic cell considerable and
anode film layer of considerable increase.
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No such vertical cracking and delamination were observed in the
anode film. The distance between individual vertical cracks was on the order of several mm.
iv) High levels of chloride, usually denoted by a light grey to white
anode film. Confirm by solution analysis.
* A lack of free cyanide can result in black or green
anode film anode polarisation or blue tint to the solution.