Structure and Corrosion Resistance of Galvanized Steel Sheets Treated by Environmental Friendly Passivation Solution

By using scanning electron microscopy,glow discharge optical emission spectrometry,anodic polarization and neutral salt spray testing,the surface morphology,composition and corrosion resistance of new environmental friendly passivation hot galvanized steel was analyzed.The results indicated that the new environmental friendly passivation solution satisfied the ROHS standard.By adding plugging solvent,the corrosion resistance of new environmental friendly passivation galvanized steel was better than that of traditional hot hexavalent chrome passivation galvanized steel.