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首页> 外文会议>PAMIR conference on transfer phenomena in magnetohydrodynamic and electroconducting flows >Analysis of MHD effects on electrochemical processes: experimental and theoretical approach of the interfacial phenomena
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Analysis of MHD effects on electrochemical processes: experimental and theoretical approach of the interfacial phenomena

机译：MHD对电化学过程的影响分析：界面现象的实验与理论方法

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Magnetically induced effects on electrolytic currents have been studied for various electrochemical systems. For all investigated cases, significant modification was found to be strictly relevant to transport process and magnetic effects were proved to be MHD (i.e. MagnetoHydroDynamic) phenomena. This holds for a reversible system (ferri-ferrocyanide) as well as for non reversible systems such as the electrocrystallization of Zn, or Ni from a pure or adulterated Watts bath. Assuming that the well-known magnetic effects on electrolytic currents in the bulk of solutions keep valid in the close vicinity of the electrode, the MHD phenomena are explained by taking into account the space charge of the diffuse layer. Theoretical expressions which depend on bulk composition and hydrodynamic conditions can thus be obtained. A comparison with experimental results under stationary or dynamic conditions was undertaken. For the latter case, two methods were employed: either classical electrochemical impedance spectroscopy (EIS) or MHD transfer function analysis. For both cases, a good agreement was found between expected physical values and calculated ones. Moreover, new results on electrocrystallization of Ni and Zn have been found.
机译：已经研究了用于各种电化学系统的磁诱导的电解电流的影响。对于所有研究病例，发现显着的修饰与运输过程严格相关，并证明了磁效应是MHD（即磁流动动力学）现象。这适用于可逆系统（Ferri-yerrocyyanide）以及非可逆系统，例如Zn的电镀化，或来自纯或掺杂的瓦塔浴的Ni。假设在大量溶液中对电解电流的众所周知的磁效应保持有效地在电极附近，通过考虑漫射层的空间电荷来解释MHD现象。因此可以获得依赖于体组合物和流体动力学条件的理论表达。进行了与静止或动态条件下的实验结果的比较。对于后一种情况，采用了两种方法：经典电化学阻抗光谱（EIS）或MHD传递函数分析。对于这两种情况，在预期的物理价值和计算的情况下发现了一个良好的一致。此外，已经发现了Ni和Zn电镀化的新结果。

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