Abstract The electropolishing of Ni surface was performed using a deep eutectic solvent (ethaline) belonging to a new generation of ionic liquids. The experiments conducted at three different values of electrode potential of anodic treatment (1.5, 1.8 and 2.0 V vs. Ag pseudo-reference electrode) showed that an increase in electrode potential results in an appreciable improvement in surface morphology (surface leveling and smoothing) and a decrease in surface roughness coefficients. The corrosion resistance of electropolished Ni in 3% NaCl solution was estimated by means of electrochemical impedance spectroscopy. An increase in the electrode potential of electropolishing causes an improvement in corrosion resistance of Ni surface, which may be due to selective dissolution of surface defects and the reduction of both real surface area and the degree of electrode heterogeneity.

中文翻译：

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通过在深共晶溶剂中电解抛光提高镍表面的耐腐蚀性

摘要 使用属于新一代离子液体的深共晶溶剂（乙醇）对镍表面进行电解抛光。在阳极处理的三个不同电极电位值（1.5、1.8 和 2.0 V vs. Ag 伪参比电极）下进行的实验表明，电极电位的增加导致表面形态（表面平整和平滑）的明显改善和降低表面粗糙度系数。通过电化学阻抗谱评估电解抛光镍在 3% NaCl 溶液中的耐腐蚀性能。电解抛光电极电位的增加导致镍表面耐蚀性的提高，