磁场流速对传感器用Cu电极电解过程及质量的影响

Effect of magnetic field velocity on electrolysis process and quality of Cu electrode used in sensor

在电解工艺制备铜的过程中加入磁场以达到协同强化效果,分析了磁场流速对传感器用Cu电极电解过程及质量的影响。结果表明:施加磁场后,形成了更复杂的铜电解反应。当提高磁场流速后,铜阳极质量损失减小,最大阴极析出量出现于流速为0.25 m/s的情况下。磁场流速对Cu电极电解阶段的杂质离子产生着显著影响。受到磁场作用后,杂质离子浓度减小,实际效果受到此磁场取向与流速的共同作用。处于0.25 m/s磁场流速下,能够获得最大的阴极析出速率,从而减小电解液内的杂质离子浓度并降低铜损失。处于垂直磁场中,在0~0.75 m/s范围的电解液黏度基本恒定,并在0.25 m/s时达到最小值。垂直磁场可以对电子传输发挥抑制作用,增强扩散效果。随着流速的增大,阻碍了Cu2+扩散过程,在0.25 m/s速率下获得最大阴极析出量。

The effect of magnetic field velocity on the electrolytic process and the quality of Cu electrode used in the sensor was analyzed.The results show that a more complex copper electrolysis reaction is formed by applying a magnetic field.After increasing the magnetic field velocity, the mass loss of copper anode decreased, and the maximum cathode precipitation appeared at the flow rate of 0.25 m/s.The magnetic field velocity has a significant effect on the impurity ions in Cu electrode electrolysis stage.The concentration of impurity ions decreases after the magnetic field is applied, and the actual effect is influenced by the magnetic field orientation and the flow velocity.At the magnetic field velocity of 0.25 m/s, the maximum cathode precipitation rate can be obtained, thus reducing the concentration of impurity ions in the electrolyte and reducing the copper loss.In the vertical magnetic field, the electrolyte viscosity in the range of 0~0.75 m/s is basically constant, and reaches the minimum value at 0.25 m/s.Vertical magnetic field can inhibit electron transport and enhance diffusion.With the increase of flow rate, Cu2+ diffusion process was hindered, and the maximum cathode precipitation was obtained at the rate of 0.25 m/s.