Alloys Fe-(0, 5, 10)Cr-10Al (all in at.%) were oxidized at 900 o C in 1 atm oxygen to study the effect of Cr additions on the oxidation behavior. The oxidation kinetics was recorded with a thermal microbalance. The morphologies and microstructures of the oxide scales were examined using SEM, EDS, and XRD. Fe-10Al developed an Al 2 O 3-rich scale during the initial stage of oxidation, and a non-protective scale containing oxides of Fe and Al formed. Mixed oxides of Al and Fe formed firstly on Fe-5Cr-10Al, but an externally dense and continuous Al 2 O 3-rich scale formed. The initially formed Fe oxides were locally reduced to Fe-rich particles. Fe-10Cr-10Al formed an Al 2 O 3-rich scale from the onset of oxidation and this slowly growing scale was protective up to 50 h. The Cr additions to Fe-10Al were beneficial for restraining the oxidation of Fe, but that did not promote the transition from metastable Al 2 O 3 to-Al 2 O 3 .
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.