Using a model of a duralumin alloy, we have studied the inhibiting efficiency of strontium chromate and a composition of phosphate and calcium-containing pigments in slightly acid rain solution. We have established that the nonchromate composition decreases the efficiency of cathodic processes on the intermetallic part of the model better than the chromate inhibitor due to the formation of a stable adsorption film containing zinc and aluminum phosphates. The proposed composition can serve as a promising substitute for toxic chromate pigments in anticorrosive paint-and-lacquer coatings on duralumin alloys.
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Translated from Fizyko-Khimichna Mekhanika Materialiv, Vol. 45, No. 4, pp. 5–11, July–August, 2009
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Zin’, I.M., Pokhmurs’kyi, V.I., Lyon, S.B. et al. A study of the inhibition of local corrosion of a duralumin alloy by nonchromate pigments. Mater Sci 45, 465–472 (2009). https://doi.org/10.1007/s11003-010-9203-6
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DOI: https://doi.org/10.1007/s11003-010-9203-6