Author/Authors :
Takaya، نويسنده , , S. and Furukawa، نويسنده , , T. and Aoto، نويسنده , , K. and Müller، نويسنده , , G. and Weisenburger، نويسنده , , A. and Heinzel، نويسنده , , A. K. Inoue-Nagata، نويسنده , , M. and Okuda، نويسنده , , T. and Abe، نويسنده , , F. and Ohnuki، نويسنده , , S. and Fujisawa، نويسنده , , Justyna T. and Kimura، نويسنده , , A.، نويسنده ,
Abstract :
The corrosion resistances of ODS steels with 0–3.5 wt% Al and 13.7–17.3 wt% Cr, and a 12Cr steel were examined. The experiments were conducted at 550 and 650 °C for up to 3000 h in stagnant LBE containing 10−6 and 10−8 wt% oxygen for the ODS steels, and at 550 °C for up to 5000 h in that containing 10−8 wt% oxygen for the 12Cr steel. Protective Al oxide scales were formed on the surfaces of the ODS steels with approximately 3.5 wt% Al and 13.7–17.3 wt% Cr. Addition of Al is very effective in improving the corrosion resistance of ODS steels. The ODS steel with 16 wt% Cr and no Al did not show any corrosion resistance except in LBE with 10−6 wt% oxygen at 550 °C. The corrosion resistance may not be improved by solely increasing Cr concentration.
