环境因素对层流下腐蚀静电场的影响

为使理论模型计算得到的腐蚀静电场与实际海水环境下测量得到的实验结果更好地进行拟合，提出流动介质条件下基于Sommerfeld积分的点电荷电位求解方法，定性分析环境因素对静电场幅值的影响。结合电化学及流体力学相关理论，对电化学极化与浓差极化共同控制下产生的腐蚀电流密度进行计算，基于腐蚀电流密度建立点电荷模型、计算介质中的腐蚀静电场，得到静电场幅值随介质温度、含盐度及流速的变化规律，并进行水池实验验证。结果表明，实际腐蚀情况比理论模型更加复杂，在一定环境条件下，实验结果与理论计算具有较好的拟合性，拟合平均误差在10%以内。

Influence of Environmental Factors on Corrosive Electrostatic Field under Laminar Current

In order to fit the corrosive electrostatic field produced by the theoretical model better with the experimental results measured in the actual seawater environment, a method for calculating point charge potential based on Sommerfeld integral in flowing media is proposed, and the influence of environmental factors on the amplitude of electrostatic field is qualitatively analyzed. The corrosion current density under the control of electrochemical polarization and concentration polarization is calculated based on the electrochemical and hydrodynamic theories, a point charge model is established based on the corrosion current density, and the corrosive electrostatic field in a medium is calculated. The variation rule of electrostatic field amplitude with the medium temperature, salinity and flow rate was obtained and verified by experiments. The results show that the actual corrosion situation is more complex than that of the theoretical model. Under certain environmental conditions, the experimental results are good agreement with the theoretically calculated results, and the average fitting error is less than 10%. Key