Study of the influence of the polyalcohol mannitol on zinc electrodeposition from an alkaline bath
Study of the influence of the polyalcohol mannitol on zinc electrodeposition from an alkaline bath
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DOI：
10.1007/s10800-010-0148-0
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发表时间：
2010-05
影响因子：
2.9
通讯作者：
M. F. D. Carvalho;W. Rubin;I. .. Carlos
中科院分区：
文献类型：
--
作者：
M. F. D. Carvalho;W. Rubin;I. .. Carlos
本文研究了在碱性镀液中添加甘露醇对AISI 1010钢电沉积锌的影响。从具有各种下限电位的循环伏安图中可以得出结论，在负扫描中，初始锌体沉积（波0区域）发生在−1.45 V。当在−1.60 V下反向扫描时，在不存在和存在甘露醇的情况下，在正扫描中均观察到阳极峰a1，这被归因于锌溶解。该峰表明区域c 0中锌的初级成核和生长之后是锌的次级成核和生长（峰c 1的区域）。扫描电子显微照片显示，在甘露醇浓度≥0.10 M时获得的锌电沉积物比在较低浓度时更精细。这些电沉积物的能量色散X射线光谱显示氧含量通常较低或低于检测限。
In this paper, the effects of adding mannitol to an alkaline plating bath on the electrodeposition of zinc onto AISI 1010 steel are described and assessed. From cyclic voltammograms with various lower-limit potentials, it is concluded that an initial zinc bulk deposition (region of wavec0) occurs from −1.45 V in the negative sweep. When the sweep is reversed at −1.60 V, an anodic peaka1is seen in the positive sweep both in the absence and in presence of mannitol, which was assigned to zinc dissolution. This peak indicates that the primary nucleation and growth of zinc in regionc0is followed by zinc secondary nucleation and growth (region of peakc1). Scanning electron micrographs show that zinc electrodeposits obtained at mannitol concentrations ≥0.10 M were more refined than at lower concentrations. Energy-dispersive X-ray spectroscopy of these electrodeposits show oxygen contents that are generally low or below detection limit.