Cyclic Oxidation Behavior of Ods FeCrAl Alloys At High Temperature in H2O and CO2 Rich Atmospheres

Oxide Dispersion Strengthened (ODS) FeCrAl alloys are of great interest for fossil energy applications because of their superior oxidation and mechanical resistance at very high temperature (1200ºC). The durability of these alloys in air is known to depend on two critical parameters: the total Al reservoir and the rate at which Al is consumed because of oxidation.  3 ODS FeCrAl alloys have been thermally cycled at T > 1100ºC in industrially relevant atmospheres rich in H₂O and CO₂. The effect of the environment on the onset of breakaway oxidation was assessed, and lifetime models were adjusted according to each specific atmosphere.