“…Fujii and Meussner [5] reported simultaneous oxidation and carburisation of Fe-Cr alloys containing 1-15 wt.% Cr in pure CO 2 at temperatures of 700, 900 and 1100°C. All alloys remained ferritic at 700°C and produced (Fe,Cr) carbides, the nature of which varied with alloy chromium content from (Fe,Cr) 3 C to (Fe,Cr) 7 C 3 and (Fe,Cr) 23 C 6 , in accordance with the Fe-Cr-C phase diagram. Carbon-containing austenite was formed at the higher temperatures and produced ferrite plus pearlite, martensite and/or (Fe,Cr) carbides upon cooling to room temperature, according to the alloy chromium content.…”