High temperature oxidation of Fe-20Cr-4Al alloys with small amounts of sulfur

摘要

High-temperature oxidation behavior of Fe-20Cr-4Al alloys with, 3, 35, 53, 104 and 171 ppm of sulfur was studied for 18.0 ks in oxygen at 1273, 1373, 1473, 1573 and 1673 K by mass change measurements, boservation of surface appearance of the alloys, X-ray diffraction, scanning electron microscopy and electron probe microanalysis. The mass changes of the alloys increased roughly with increasing oxidation temperature.