The dealloying performances of the free side and roller side of the Al₅₀Au₅₀ ribbons are investigated under different dealloying conditions. The free side consisting of Al₂Au, AlAu, and AlAu₂ phases undergoes more severe corrosion than the monophasic AlAu roller side. The Al₂Au phase not only acts as an anodic electrode in galvanic corrosion of free side but also leaves nanoporous Au behind and induces further dealloying of AlAu by the capillary action. The oxide film is confirmed as Al–O film with solubilized Au atoms. During corrosion, the Au atoms in oxide film tend to segregate into Au-rich and Au-lacked regions. The Au-rich region remained can enhance the Au-content on surface and impede the further corrosion.

研究了不同脱合金条件下Al ₅₀ Au ₅₀带材自由面和辊面的脱合金性能。_{由 Al 2} Au、AlAu 和 AlAu ₂相组成的自由侧比单相 AlAu 辊侧遭受更严重的腐蚀。铝₂Au相不仅在游离侧的电偶腐蚀中充当阳极电极，而且还留下纳米多孔Au并通过毛细作用引起AlAu的进一步脱合金。氧化膜被确认为具有溶解的Au原子的Al-O膜。在腐蚀过程中，氧化膜中的金原子倾向于偏析成富金区和缺金区。留下的富金区域可以提高表面的金含量，阻碍进一步的腐蚀。