Corrosion Behavior of Weathering Test Steel for Bridge under Neutral Wet/Dry Alternate Condition

The corrosion behaviors of a high-performance weathering test steel for bridge and the reference steel 09CuPCrNi-A were studied under 3.5% NaCl neutral wet/dry alternate condition for revealing their dynamic curve tendency of primary corrosion and the rusting law in the simulative marine atmosphere environment. By observing the corrosion evolution of surface morphology and analyzing the composition by scanning electronic microscopy (SEM) and energy dispersive spectrometer (EDS) in different stages, the corrosion mechanism was further discussed in details.