Behavior of sulfur on high temperature oxidation of Fe-20Cr-4Al alloys

Tadaaki AMANO; Akira HARA; Tomohiro ITOH; Hidenori OHBA; Toshiki WATANABE; Ko SASAKI

doi:10.2978/jsas.10.2-3_103

Tadaaki AMANO, Akira HARA, Tomohiro ITOH, Hidenori OHBA, Toshiki WATANABE, Ko SASAKI

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Keywords: Fe-20Cr-4Al, Sulfur, Oxidation, Adherence, Ductility

JOURNAL FREE ACCESS

1998 Volume 10 Issue 2-3 Pages 103-104

DOI https://doi.org/10.2978/jsas.10.2-3_103

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Abstract

Behavior of sulfur in high temperature oxidation of Fe-20Cr-4Al alloys with 491, 1300 and 6300ppm of sulfur was studied at 1473K for 18.0ks in 1 bar of oxygen. Mass changes of these alloys after the oxidation were almost the same of 0.60×10^-2kg/m². The oxide scales with good adhesion on each alloys were analysed as α-Al₂O₃ by XRD analyses. Observation of indentation by hardness measurement suggested that a highly ductile scales were formed on these alloys.

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