Gd. Wilcox et Ja. Wharton, A REVIEW OF CHROMATE-FREE PASSIVATION TREATMENTS FOR ZINC AND ZINC-ALLOYS, Transactions of the Institute of Metal Finishing, 75, 1997, pp. 140-142
With increasing environmental awareness apparent in all facets of meta
l finishing, the need to find low toxicity alternatives to hexavalent
chromium-based passivation treatments is of prime importance. This pap
er reviews some of the possible systems reported in the literature and
discusses their efficiency as promoters of conversion coatings on zin
c-based surfaces.