Phosphating metal surfaces

Details Phosphating metal surfaces Phosphating metal surfaces

C - Chemistry, Metallurgy

23

C

148/17

C23C 22/07 (2006.01) C23C 22/18 (2006.01)

Patent

CA 1218284

4444-140 ABSTRACT OF THE DISCLOSURE Surfaces of iron-based metals or zinc-based metals are phosphated by contacting the metal surfaces with an acidic aqueous solution containing from 0.1 to 2.0 g/l of zinc ion, from 5 to 30 g/l of phosphate ion, from 0.2 to 3 g/l of manganese ion, and a conversion coating accelerator. The phosphated metal surfaces are then suitable for subsequent electrocoating.

446700

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