EVOLUTION OF OXIDE SCALES ON FeAl GRADE 3 INTERMETALLIC ALLOY

Authors :: Pedraza, Fernando
Grosseau-Poussard, Jean-Luc
Dinhut, J.F
Laboratoire d'Etude des Matériaux en Milieux Agressifs (LEMMA)
Université de La Rochelle (ULR)
Source :: Intermetallics / CHOI INTERMETALLICS, Intermetallics / CHOI INTERMETALLICS, 2005, 13, pp.27-33. ⟨10.1016/j.intermet.2004.04.042⟩
Publication Year :: 2005
Publisher :: HAL CCSD, 2005.
Abstract: International audience; The ODS FeAl Grade 3 intermetallic alloy have been shown to develop a structured oxide scale upon isothermal oxidation between 850 and 950º C for 24 h. Transmission electron microscopy studies have revealed a top nanoequiaxed alumina, central alumina and bottom Fe-Al spinel. At 1000º C, the spinel phase no longer forms but a columnar alumina layer topped up with a nanoequiaxed structure. The role of yttria is negligible at lower temperatures whereas some segregation at the scale/substrate interface and precipitation of YAlO3 is observed at 1000º C.

Subjects :: oxidation
Iron aluminides (based on FeAl)
[CHIM.MATE]Chemical Sciences/Material chemistry

Language :: English
Database :: OpenAIRE
Journal :: Intermetallics / CHOI INTERMETALLICS, Intermetallics / CHOI INTERMETALLICS, 2005, 13, pp.27-33. ⟨10.1016/j.intermet.2004.04.042⟩
Accession number :: edsair.dedup.wf.001..daa00a1e2fac9003fe05a12d558f0420
Full Text :: https://doi.org/10.1016/j.intermet.2004.04.042⟩