海水中钢的电偶腐蚀研究

获取了不同电位差的钢偶对在海水吧不同面积比偶合的腐蚀结果，讲座了海水中钢偶对的电偶腐蚀行为；对文献中推导的海水中钢偶对的腐蚀速度公式进行了检验和简化，海水中钢偶对阳极的腐蚀速度随阴、阳极自腐蚀电极差和阴／阳极面积比的增大而增大，阳极的腐蚀速度与阴／阳极面积比的关系是非线性的，且阳极的腐蚀速度随阴／阳极面积比的增大有一个极限值，阴极的腐蚀速度随阴／阳极面积比减小和阴／阳极电位差增大而减小，简化的海水中钢偶对的腐蚀速度公式与试验结果符合较好。

STUDY ON GALVANIC CORROSION OF STEEL COUPLES IN SEAWATER

Galvanic corrosion results of steel couples with various free corrosion potential difference and surface area ratio of cathode to anode in seawater have been obtained.Galvanic corrosion behavior of the steel couples was discussed.Equation of anodic corrosion rate of steel couples in seawater were examined and simplified.With the increase of free corrosion potential difference and surface area ratio of cathode to anode, the anodic corrosion rates of steel couples increase.The relationship between anodic corrosion rate of steel couples and surface area ratio of cathode to anode is nonlinear.With the increase of surface area ratio of cathode to anode, the anodic corrosion rates have a limit.With the increase of corrosion potential difference between cathode and anode and the decrease of area ratios of cathode to anode, corrosion rate of cathode decreased.The simplified equation of anodic corrosion rate of steel couples in seawater has a good consistence with the experimental results.