%0 Journal Article
%T Behavior of Electrogalvanized Steel Pre-Treated with Cr(III)-Based Baths and Exposed to 0.5 M Na2SO4 Solution
%A C.R. Tomachuk
%A C.I. Elsner
%A A.R. Di Sarli
%J Portugaliae Electrochimica Acta
%D 2012
%I Sociedade Portuguesa de Electroqu¨ªmica
%X As Cr (VI) compounds used to formulate conversion layers provide enhanced anticorrosive protection to zinc coatings, but they are produced using hazardous chemicals, the development of ''green'' technologies is a paramount purpose. Consequently, the corrosion behavior of zinc coatings subjected to a Cr3+ based passivating treatment, with and without sealing, was studied through EIS measurements in 0.5 M Na2SO4 solution. The analyses of the experimental data allowed inferring that the Cr3+-based conversion treatment with an adequate sealer provides good corrosion resistance and, coupled to an adequate painting system, could be a suitable alternative to traditional chromate coatings.
%K corrosion
%K trivalent chromium
%K conversion layer
%K sealing treatment
%K electrogalvanized steel
%U http://www.scielo.oces.mctes.pt/scielo.php?script=sci_arttext&pid=S0872-19042012000300001