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11192 Cyclic Oxidation Behavior of ODS FeCrAl Alloys at High Temperatures in H2O and CO2 Rich Atmospheres

Picture for 11192 Cyclic Oxidation Behavior of ODS FeCrAl Alloys at High Temp in H2O and CO2 Rich Atmospheres
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Product Number: 51300-11192-SG
ISBN: 11192 2011 CP
Author: Aurelie Vande Put, Sebastien Dryepondt and Bruce A. Pint
Publication Date: 2011
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Oxide dispersion strengthened FeCrAl alloys are of great interest for fossil energy applications because of their superior oxidation and creep 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. Two 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.

Key words: Cyclic oxidation, humid air, CO2, EPMA, lifetime model
Oxide dispersion strengthened FeCrAl alloys are of great interest for fossil energy applications because of their superior oxidation and creep 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. Two 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.

Key words: Cyclic oxidation, humid air, CO2, EPMA, lifetime model
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