Abstract Monophasic Al50Au50 ribbons (labelled as S2ann) were obtained by melt spinning and annealing. The corrosion properties of S2ann were investigated in AlCl3 + HCl solution with as-spun multiphasic ribbons (labelled as S2sp) for comparison. S2ann is self-passivated and has a wide passivation region, while S2sp tends to undergo Al2Au-induced selective dissolution under anodic polarization. Besides, S2ann has a fluctuant open-circuit potential and a passive film with p-type semiconductor feature, which are not found in S2sp. The passive film of S2ann is examined to be Au-contained Al2O3 with a double-layer structure.

中文翻译：

---

单相和多相 Al50Au50 薄带在 AlCl3 + HCl 溶液中的腐蚀行为

摘要 通过熔融纺丝和退火获得单相Al50Au50 带（标记为S2ann）。S2ann 的腐蚀性能在 AlCl3 + HCl 溶液中用初纺多相带（标记为 S2sp）进行研究以进行比较。S2ann 是自钝化的，具有较宽的钝化区域，而 S2sp 在阳极极化下倾向于经历 Al2Au 诱导的选择性溶解。此外，S2ann 具有波动的开路电位和具有 p 型半导体特征的钝化膜，这在 S2sp 中是没有的。S2ann 的钝化膜被检测为具有双层结构的含 Au 的 Al2O3。