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。
Current distributions in a cathodically protected crevice between a simulated coating and segmented mild steel electrodes were measured in diluted NaCl solutions.The effects of the control potential,Solution conductivity and crevice thickness on the current distribution were studied.The results showed that the xurrent distribution inside the crevice became uniform with prolonging of polarization time.In general, the more negative the control potential, the greater the solution conductivity and crevice thickness,the larger the current density inside the crevice.
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