Abstract
Aluminum deoxidation equilibrium of molten Fe-Ni alloy was determined by chemical equilibrium method at temperature of 1873 to 1973 K. Also, critical point in molten Fe-40mass%Ni alloy that coexisted with AI 2O 3 and FeO. AI 2O 3 was determined experimentally at 1973 K. Solvent extraction method was applied to improve the analytical accuracy of the low aluminum content in molten Fe-Ni alloy. The relation between aluminum and oxygen contents in molten Fe-Ni alloy equilibrated with AI 2O 3 or FeO. AI 2O 3 was estimated in the whole alloy composition range at 1873 to 1973 K by utilizing the metallic solution model based on Darken's quadratic formalism and Redlich-Kister type polynomial.
Original language | English |
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Pages (from-to) | 1533-1541 |
Number of pages | 9 |
Journal | Isij International |
Volume | 48 |
Issue number | 11 |
DOIs | |
Publication status | Published - 2008 |
Keywords
- Activity
- Alumina
- Aluminum deoxidation equilibrium
- Excess free Gibbs energy
- Hercynite
- Iron
- Iron-nickel alloy
- Nickel
- Quadratic formalism
- Redlich-Kister polynomial
- Thermodynamics
ASJC Scopus subject areas
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys
- Materials Chemistry