摘要
The influence of the direction and magnitude of direct(DC)stray current on the disbonding performance of epoxy powder coating was studied by using electrochemical impedance spectroscopy and scanning electron microscopy technology.The results show that the application of DC stray current could accelerate the anodic dissolution.The peeling degree of the coating increases as the magnitude of positive DC stray current interference increases in the range of 2–8V.With 16V positive stray current disturbance,the degree of coating disbonding decreases.With the application of negative stray current,the coating peeling becomes more serious,and the degree of peeling increases as the DC stray current increases.
基金
supported by“Civil Aviation Safety Capacity Building Fund(Construction of safety evaluation system for multibranch complex annular apron pipe network)”
“the Fundamental Research Funds for the Central Universities(19CX05007A).”
