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<正>Three Fe-Cr model alloys(Cr:9,17,and 25 wt%) were subjected to cyclic oxidation in Ar-10%H_2-5%H_2O(p_(o_2)=3.6×10~(-22) atm),Ar-20%O_2 and Ar-20%O_2-5%H_2O atmospheres at 700℃.In general,increasing alloy chromium levels reduced the oxidatio