The corrosion behavior of pipeline steel under the interference of stray current under cathodic protection was studied by means of electrochemical experiment. The results show that with the increase of AC current density, the corrosion potential of pipeline steel shifts negatively and the tendency of metal corrosion increases. Ac interference promoted the anodic oxidation reaction in positive half cycle of AC, and the corrosion rate of pipeline steel increased. The increase of AC frequency shorens the corrosion time of AC positive half-cycle pipeline steel, reduces the Faraday current that promotes metal oxidation reaction, and decreases the corrosion rate of pipeline steel.
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Li et al. (2024) studied this question.
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