Abstract:The oxidation behaviour and the subsequent chemical failure of a Fe-20Cr-5Al based
alloy were studied at 1200°C in laboratory air, at times of up to 700 hours. Tests on 70 micron thick
foils, showed void formation at the metal/oxide interface soon after the aluminium content in the
alloy dropped below a critical level (≤0.5 wt%). At this stage, the alloy could no longer sustain
alumina scale formation and resulted in the initiation and development of a Cr-rich sub-layer. This
chromia layer was found to be cont… Show more
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