Abstract
A nearly single-phase θ-Al2O3 scale has been grown on two FeCrAl alloys, according to a time-temperature-transformation relationship for the formation of external alumina scales. SIMS sputter depth profiles of the 18O 16O distribution consistently indicate that θ-Al2O3 scales grow primarily by the outward transport of Al. This mechanism is consistent with the observed scale microstructure and is significantly different from tracer profiles for α-Al2O3 scales.
Original language | English |
---|---|
Pages (from-to) | 99-107 |
Number of pages | 9 |
Journal | Solid State Ionics |
Volume | 78 |
Issue number | 1-2 |
DOIs | |
State | Published - May 1995 |
Externally published | Yes |
Keywords
- O/SIMS
- Oxide scales
- Phase transformation