Abstract The effect of 0.1 T vertical magnetic field (MF) on the corrosion behavior of nickel-based electrochemical shielding coating (EMSC) was investigated in a 3.5 wt.% NaCl solution. Electrochemical impedance measurements and a scanning electron microscope were used to monitor the corrosion procedure and filler distribution of the coating. Results showed that MF played two competing roles on the corrosion process of the coating. On the one hand, MF homogenized the nickel fillers in the polymer matrix and provided a force to pull electrolytes away from the interface between nickel particles and resin. This phenomenon enhanced the corrosion resistance of the coating to the diffusion of corrosion media. On the other hand, MF accelerated the horizontal diffusion of the solution in the coating, and especially exerted a determinant effort after the electrolyte arrived at the interface of the coating and the substrate. In general, the corrosion progress of the nickel-based EMSC system was inhibited when a 0.1 T MF was applied to the coating system.

中文翻译：

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磁场对镍基电磁屏蔽涂层电化学行为的协同作用

摘要 研究了 0.1 T 垂直磁场 (MF) 在 3.5 wt.% NaCl 溶液中对镍基电化学屏蔽涂层 (EMSC) 腐蚀行为的影响。电化学阻抗测量和扫描电子显微镜用于监测涂层的腐蚀过程和填料分布。结果表明，MF 在涂层的腐蚀过程中扮演着两个相互竞争的角色。一方面，MF 使聚合物基体中的镍填料均质化，并提供了一种力，将电解质从镍颗粒和树脂之间的界面上拉开。这种现象增强了涂层对腐蚀介质扩散的耐腐蚀性。另一方面，MF加速了溶液在涂层中的水平扩散，尤其是在电解液到达涂层和基材的界面后发挥了决定性的作用。一般来说，当 0.1 T MF 应用于涂层系统时，镍基 EMSC 系统的腐蚀进程受到抑制。