Abstract
In order to study the effect of Cr and Y2O3 addition on the oxidation behavior of novel Co-20Cr-10Al (wt.%) oxide dispersion strengthened (ODS) superalloys, an isothermal oxidation test was carried out at 900 °C in air. The addition of Cr altered the oxide scale from the multilayered scale with an external Co oxide/CoAl2O4 and an inner Al2O3 to a single Al2O3 scale. Y2O3 addition increased oxidation mass gain slightly but improved spallation resistance of the external Al2O3 scale.
Original language | English |
---|---|
Pages (from-to) | 147-156 |
Number of pages | 10 |
Journal | Corrosion Science |
Volume | 127 |
DOIs | |
Publication status | Published - 2017 Oct |
Externally published | Yes |
Keywords
- A. Alumina
- A. Cobalt
- B. EPMA
- C. Oxidation
ASJC Scopus subject areas
- Chemistry(all)
- Chemical Engineering(all)
- Materials Science(all)