It is well known that under certain conditions iron becomes anodic to zinc in water systems. The experimental work carried out on the reversal of potential used a constant zinc to iron area. However, in galvanized pipes carrying water the area of iron exposed varies due to threaded joints, flaws in the zinc coating and solution of the zinc. As the ratio of iron to zinc area is increased it is shown that the reversal of potential is faster. 3.6.4

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Copyright 1958 by the National Association of Corrosion Engineers.
1958
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