Corrosion behavior of nickel-containing weathering steel in simulated marine atmospheric environment

The influence of Ni on the corrosion behavior of Ni-containing weathering steel (Q415NH) was investigated under alternate dry/wet conditions. The results suggested that the addition of Ni shifted the corrosion potential of the steel to the positive direction and lowered the corrosion current density. Furthermore, the addition of Ni was in favor of the formation of a compact and homogeneous inner rust layer (composed of most alpha-FeOOH and little beta-FeOOH), leading to enhanced corrosion resistance of the steel in the simulated marine atmosphere.