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| STUDY ON GALVANIC CORROSION OF STEEL COUPL ES IN SEAWATER |
| 青岛海洋腐蚀研究所 |
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Abstract Galvanic corrosion results of steel couples with various free corrosio n potential difference and surface area ratio of cathode to anode in seawater ha ve been obtained.Galvanic corrosion behavior of the steel couples was discus se d.Equation of anodic corrosion rate of steel couples in seawater were examined a nd simplified.With the increase of free corrosion potential difference and surf ace area ratio of cathode to anode, the anodic corrosion rates of steel couples increase.The relationship between anodic corrosion rate of steel couples and s urface area ratio of cathode to anode is nonlinear.With the increase of surf ace area ratio of cathode to anode, the anodic corrosion rates have a limit.With th e increase of corrosion potential difference between cathode and anode and the d ecrease of area ratios of cathode to anode, corrosion rate of cathode decreased. The simplified equation of anodic corrosion rate of steel couples in seawat er has a good consistence with the experimental results.
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Received: 26 December 1999
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