Oxidiation resistance of Fe-Al intermetallic containing 21.4 wt%Al at 1250℃

Fe-Al intermetallic containing 21.4%Al was developed.And its property of oxidiation resistance at 1250℃ was analyzed and studied by using XRD,SEM and EDS analysis.The results show that,its cast structure is FeAl phase, and its oxidation kinetics curve at 1250℃ obeys parabolic law.The oxide film firmly bonded to substrate is only Al_2O_3 layer at 1250℃.Fe-Al intermetallic containing 21.4% Al exhibits grade 1 oxidation resistance at 1250℃.The composition of Fe-Al intermetallic containing 21.4%Al is designed reasonably.