In this paper, the influence of alternating stray current (AC) on the anti-cathode disbondingperformance of FBE anti-corrosion layers was studied by an electrochemical method using a hightemperature simulation experiment. The results show that the AC stray current promotes the cathodicdisbondment of the epoxy powder coating. Because the existence of AC stray currents could increasethe replacement rate of the hydrogen evolution reaction and the anodic corrosion on the coatingdisbonding, the interference of the AC stray current exacerbates the degree of anode corrosion, whichindirectly leads to a shorter cycle of the anode-anode reaction. Thus, the disbonding speed is increased,and the degree of cathodic disbonding of the epoxy powder coating increases as the applied AC straycurrent increases.
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