| abstract |
A method for the corrosion-prevention treatment of a metal suface comprises projecting onto a metal surface a shot-blast particulate material consisting of a core of iron or an iron alloy, an undercoat of a iron-zinc alloy and a top coat of zinc or a zinc alloy, thereby forming a coating film of zinc or the zinc alloy on the metal surface, and bringing the thus coated metal surface into contact with an aqueous suspension of silica and an aqueous solution containing ions of at least one metal selected among Ti, Zr, Mg, Ba, Sr, W, Ni, Co, Sn, Mo, and Mn. |