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采用分段碳钢电极测量了稀ＮａＣｌ溶液中阴极保护下模拟缝隙内的电流分布，研究了缝口控制电位、溶液电导率和缝隙宽度对电流分布的影响．结果表明在实验条件下缝隙内的电流分布随极化时间的延长而趋于均匀．溶液电导率和缝隙宽度的增大以及缝口控制电位的负移都可使缝隙内局部电流增大，阴极保护深度增大．
The current distribution in the simulated gap under cathodic protection in dilute NaCl solution was measured by using segmented carbon steel electrodes. The effects of control potential, solution conductivity and gap width on the current distribution were studied. The results show that the current distribution in the gap tends to be uniform with the increase of polarization time under the experimental conditions. The increase of solution conductivity and gap width and the negative shift of slot control potential can increase the local current in the gap and increase the cathodic protection depth.