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实验测量了稀NaCl溶液中阴极保护下的模拟缝隙内低碳钢的电极电位分布 ,研究了缝口控制电位、溶液电导率和缝隙厚度对电位分布的影响。结果表明在实验条件下缝隙内的电位梯度随极化时间的延长而减小 ;溶液电导率和缝隙厚度的增大以及缝口控制电位的负移都可使缝隙内电位负移 ,阴极保护深度增加
The electrode potential distribution of mild steel under simulated cathodic protection in dilute NaCl solution was measured experimentally. The influence of control potential, solution conductivity and gap thickness on potential distribution was studied. The results show that under the experimental conditions, the potential gradient in the gap decreases with the increase of the polarization time. The increase of the solution conductivity and the thickness of the gap and the negative shift of the control potential of the slot can negatively shift the potential in the gap. The cathodic protection depth increase