Abstract
By using electrochemical methods of a.c. and d.c. and electron microscopy, we investigated the corrosion behavior of galvanized steel in a slightly acid medium that simulates atmospheric precipitation and contains extracts of chromate and chromate-free pigments. We established that the joint use of phosphate and calcium-containing pigments can ensure efficient corrosion protection on a par with chromate pigments due to the formation of a phosphate film with high barrier properties on a metal.
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