Research on Electrochemical Behavior of Cu-Cu_2O Coating on Q 235 Steel
The Cu-Cu2O coatings on Q 235 steel were prepared by cold spray, and the effect of soaking times, Cl-concentration and pH value on the electrochemical properties of the coatings were studied. The results show that the limiting current of the coating decreased with the increase of soaking times. Cl-hindered the formation of oxide film on the coating, and accelerate the corrosion. The limiting current area of the coating is wide, and the oxidation membrane potential is high in buffer solution with pH=10.