Aluminizing and Corrosion of Carbon Steels in N2/0.5%H2S Gas at 650-850℃
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The effect of hot-dip aluminizing on the corrosion of the low carbon steel was studied at 650-850oC for 20-50 h in N2/0.5% H2S 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 α-Al2O3 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, Fe3O4 and Fe2O3 as minor ones.
Abstract
The effect of hot-dip aluminizing on the corrosion of the low carbon steel was studied at 650-850oC for 20-50 h in N2/0.5% H2S 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 α-Al2O3 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, Fe3O4 and Fe2O3 as minor ones.
참고문헌 (12)
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