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Efficiency of certain chromate-free pigments for the corrosion protection of galvanized steel

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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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Authors and Affiliations

  1. Karpenko Physicomechanical Institute, Ukrainian Academy of Sciences, L’viv

    I. M. Zin

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  1. I. M. Zin
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Translated from Fizyko-Khimichna Mekhanika Materialiv, Vol. 36, No. 3, pp. 112–114. May-June. 2000.

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Zin, I.M. Efficiency of certain chromate-free pigments for the corrosion protection of galvanized steel. Mater Sci 36, 450–453 (2000). https://doi.org/10.1007/BF02769610

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  • DOI: https://doi.org/10.1007/BF02769610

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