| 摘要 |
PURPOSE:To form the coated layer of Cu alloy excellent in corrosion resistance and stainproof properties without increasing water resistance in the period of a voyage by thermally-spraying an insulating material or a sacrificing anode material on an ocean structural member such as the outside plate of a hull and thermally-spraying the coating material of Cu alloy thereon to smooth the surface. CONSTITUTION:The coated layer of Cu alloy such as Cu-Ni which is exellent in the corrosion resistance and the stainproof properties in the ocean is formed in order to increase the corrosion resistance and the stainproof properties (the adhesion preventive properties for the marine organisms) of the ocean structural member such as the outside plate of the hull of a ship. In such a case, an insulating material such as Al2O3 and TiO2 or the sacrificing anode material 2 such as Zn, Al and Sn is thermally sprayed on the surface of the steel plate 1 of the outside plate of the hull, heated and melted to form a middle layer 3. Then after forming a Cu alloy layer 4 excellent in the corrosion resistance and the stainproof properties such as Cu-Ni, Cu-Sn-Zn-Al with the plasma thermal spray or the like, this layer 4 is heated and melted to seal the holes and an external coated layer 5 due to Cu alloy having the smooth surface is formed.
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