저널

The effect of hot-dip aluminizing on the corrosion of the low carbon steel was studied at $650-850^{circ}C$ for 20-50 h in $N_2/0.5%;H_2S$ gas. The aluminized steel consisted primarily of the Al topcoat and the underlying Al-Fe alloy layer. Aluminizing drastically improved the corrosion resistance by forming the ${alpha}-Al_2O_3$ surface scale. Without aluminizing, the steel formed nonadherent, fragile, thick scales, which consisted of FeS as the major phase and iron oxides such as FeO, $Fe_3O_4$ and $Fe_2O_3$ as minor ones.

Hot Dipping;Aluminizing;Sulfidation;Oxidation;$H_2S$ Corrosion;