| 摘要 |
PURPOSE:To improve the pitting corrosion resistance of an Al member by coating the surface of the Al member with an alloy consisting of prescribed percentages of Si, Mg, Zr and Al by hot dipping to form a sacrificial anode material. CONSTITUTION:An alloy consisting of, by weight, 6-13% Si, 0.05-3% Mg, 0.2- 3% Zr and the balance Al is refined. A part or the whole of the surface of the Al member is coated with the alloy by hot dipping to form a sacrificial anode material. The pitting corrosion resistance of the member is remarkably improved. |
