In this work, the surface properties of Mg–Al–Zn (AZ91D) alloy such as surface morphology, hardness and electrochemical corrosion were studied after copper ions (Cu+) irradiation at different energies (0.8, 1.5, 2.5 and 3.5MeV) while keeping the ion dose constant at 5×1014 ions/cm². The morphological features of irradiated samples showed defects composed of ejected material from the alloy surface that became more significant at 3.5MeV. The Vickers hardness was increased with increase of the Cu+ energy. The electrochemical testing of the samples was conducted in a Ringer Lactate solution. The potentiodynamic polarization results revealed anomalous changes in the corrosion rate of the Mg alloy with increase of the Cu+ energy. The corrosion rate was considerably decreased with increase of the Cu+ energy to 3.5MeV. These changes were associated with the surface defects and passive film formation on the alloy surface.

中文翻译：

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铜离子辐照镁铝锌合金在乳酸林格溶液中的硬度和腐蚀速率研究

在这项工作中，研究了 Mg-Al-Zn (AZ91D) 合金的表面性质，如表面形貌、硬度和电化学腐蚀。+)不同能量的辐照（0.8、1.5、2.5 和 3.5MeV）同时保持离子剂量恒定在5×1014离子/cm ²。辐照样品的形态特征显示由合金表面喷射材料组成的缺陷在 3.5 时变得更加显着兆伏安。维氏硬度随着铜的增加而增加+活力。样品的电化学测试在乳酸林格溶液中进行。动电位极化结果表明，随着 Cu 含量的增加，Mg 合金的腐蚀速率发生异常变化。+活力。腐蚀速率随着铜的增加而显着降低+能量到 3.5兆伏安。这些变化与合金表面的表面缺陷和钝化膜的形成有关。