International Lead Zinc Research Organization, Inc.

Jean Yperman

Andre Skenazi

Armand Davin

Bruno Renaux

There is disclosed a method of depositing a protective coating on a ferrous substrate comprising the steps of immersing the substrate in an electrolytic solution containing zinc chloride, a fluoride and at least one of NiCl.sub.2 and CoCl.sub.2, electrodepositing on said substrate a thin pre-coating comprising zinc, said electrolytic bath also functioning as a flux such that the thin electrodeposited coating comprising zinc will have thereon a flux coating as the substrate is removed from the electrolytic bath; removing the pre-coated substrate from the electrolytic bath, thereafter immersing the pre-coated substrate in a molten metal bath containing zinc so as to deposit a zinc-containing protective coating on said substrate, and removing said substrate from said molten bath.

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Plainevaux, Belgium

Jean Yperman