Process for improving the anti-corrosion properties of steel...

Details Process for improving the anti-corrosion properties of steel... Process for improving the anti-corrosion properties of steel...

C - Chemistry, Metallurgy

23

F

148/47, 117/114.

C23F 7/04 (1980.01)

Patent

CA 1038245

ABSTRACT OF THE DISCLOSURE A process is provided for coating a ferrous metal article, e.g. steel or iron, with a corrosion resistant surface layer. The process involves first coating the article with a layer of nickel and/ or cobalt, then heating the coated article for a time less than 45 minutes at an austenitizing temperature in excess of 725°C and then applying to the first metal layer an additional layer of at least one of the metals selected from the group consisting of chromium, tin, lead, zinc, copper and cadmium. The coated article so obtained has improved resistance to corrosion.

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