Abstract The effects of glycine on the mechanism of electrodeposition of Ni–Mn alloy film prepared in ChCl–urea ionic liquid were studied in order to control the composition, microstructure and properties of the film. The cyclic voltammograms revealed that the presence of glycine in the ionic liquid can inhibit the reduction of Ni 2+ ions but promote the reduction of Mn 2+ ions in the cathodic scan. However, it promoted the dissolution of both Ni and Mn deposits in the ChCl–urea ionic liquids during the reverse scan. Glycine changed the mode of Ni–Mn film growth from Volmer–Weber mode into Stranski–Krastanov mode. The Mn content in the Ni–Mn film increased with the increase of concentration of glycine and current density. The Ni–Mn alloy film with 3.1 at.% Mn exhibited the lowest corrosion current density of 3 × 10 −7 A/cm 2 compared with other films prepared and exhibited better corrosion resistance than pure Ni film in 3.5 wt.% NaCl solution.

中文翻译：

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甘氨酸和电流密度对离子液体中制备的Ni-Mn薄膜电沉积机理、成分和性能的影响

摘要 为了控制薄膜的成分、微观结构和性能，研究了甘氨酸对在氯化氯-尿素离子液体中制备的镍锰合金薄膜电沉积机理的影响。循环伏安图显示离子液体中甘氨酸的存在可以抑制Ni 2+ 离子的还原，但在阴极扫描中促进Mn 2+ 离子的还原。然而，在反向扫描过程中，它促进了 Ni 和 Mn 沉积物在 ChCl-尿素离子液体中的溶解。甘氨酸将 Ni-Mn 薄膜的生长模式从 Volmer-Weber 模式转变为 Stranski-Krastanov 模式。Ni-Mn 薄膜中的 Mn 含量随着甘氨酸浓度和电流密度的增加而增加。具有 3.1 at. 的 Ni-Mn 合金薄膜。