In Situ Observation of Cu2+ Concentration Profile During Cu Dissolution in Magnetic Field
In Situ Observation of Cu2+ Concentration Profile During Cu Dissolution in Magnetic Field
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DOI：
10.1149/1945-7111/abeb2a
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发表时间：
2021-03
影响因子：
3.9
通讯作者：
Go Kamesui;K. Nishikawa;H. Matsushima;M. Ueda
中科院分区：
文献类型：
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作者：
Go Kamesui;K. Nishikawa;H. Matsushima;M. Ueda
了解和控制非常小的零件的腐蚀非常重要。为此，有必要对腐蚀反应进行现场观察。磁场提供了一种影响腐蚀反应的新方法。我们使用全息激光干涉显微镜研究了铜阳极在磁场中的溶解。显微镜使我们能够量化扩散层的生长和电极附近 Cu 2+ 浓度的变化。通过将阳极夹在两个环形钕磁铁之间，可以显着抑制由溶解引起的表面浓度的增加，而扩散层的厚度几乎不受影响。目前的结果支持了磁场中质量传递增强的假设。
It is important to understand and control corrosion in very small parts. For this purpose, in situ observation of corrosion reactions is necessary. Magnetic fields offer a new way of influencing corrosion reactions. We have investigated the dissolution of a Cu anode in a magnetic field using a holographic laser interferometric microscope. The microscope enables us to quantify the growth of the diffusion layer and the variation in Cu 2+ concentration in the vicinity of the electrode. By sandwiching the anode between two doughnut-shaped neodymium magnets, the increase in the surface concentration caused by dissolution is remarkably suppressed, whereas the thickness of the diffusion layer is barely affected. The present results support the hypothesis that mass transport in enhanced in the magnetic field.