Effect of spraying distance and arc current on the corrosion behavior of arc-sprayed Zn–15Al coatings for rolling stock components (opens in new tab)

Arc sprayed Zn15Al coatings with different spraying parameters: arc current and spraying distance were investigated. The corrosion behavior of the coatings was studied using an electrochemical impedance spectroscopy (EIS), cyclic corrosion testing (CCT-4), and coastal railway exposure test. Corroded surfaces were characterized by scanning electron microscopy (SEM). The corrosion product formed on the coating was analyzed by X-ray diffraction (XRD) and scanning electron microscopy. From the po...