AlFe3: enthalpy of formation
8 accepted literature formation-enthalpy value(s) (DFT 8).
Systems: Al–Fe
Literature values
| Value | Phase as printed | T (K) | Class | Method | System | Source | Location | Quote |
|---|---|---|---|---|---|---|---|---|
| -19.4 kJ/mol (basis unstated) | Fe3Al | DFT | DFT | Al–Fe | [1] Ostrowska 2019 cites OQMD | Table 3, p. 3, row 5 report | ||
| -19.21 kJ/mol (basis unstated) | Fe3Al | DFT | DFT | Al–Fe | [1] Ostrowska 2019 cites AFLOW | Table 3, p. 3, row 7 report | ||
| -19.11 kJ/mol (basis unstated) | Fe3Al | DFT | DFT | Al–Fe | [1] Ostrowska 2019 cites NIST | Table 3, p. 3, row 6 report | ||
| -18.87 kJ/mol (basis unstated) | Fe3Al D03 | 0 | DFT | DFT | Al–Fe | [2] Berche 2018 | Table 1, p. 4, row 1 report | |
| -18.73 kJ/mol (basis unstated) | Fe3Al | DFT | DFT | Al–Fe | [1] Ostrowska 2019 cites materialsproject | Table 3, p. 3, row 4 report | ||
| -14.9 kJ/mol (basis unstated) | Fe3Al A15 | 0 | DFT | DFT | Al–Fe | [2] Berche 2018 | Table 1, p. 4, row 3 report | |
| -14.69 kJ/mol (basis unstated) | Fe3Al A2 | 0 | DFT | DFT | Al–Fe | [2] Berche 2018 | Table 1, p. 4, row 2 report | |
| 4.09 kJ/mol (basis unstated) | Fe3Al D03 | 0 | DFT | DFT | Al–Fe | [2] Berche 2018 | Table 1, p. 4, row 4 report |
Uncertainty budget
Components kept separate, in the value's unit (literature SCHEMA.md, UNCERTAINTY_CALIBRATION.md): effective = max(sqrt(max(printed, reading, method)^2 + composition^2 + conversion^2), scatter). The method floor is the robust between-study scatter of the method class in ORCHID (calibrated) or a documented prior; printed values and printed uncertainties are unchanged.
| Value | Unit | Printed | Reading | Method (class, basis) | Composition | Scatter | Conversion | Effective |
|---|---|---|---|---|---|---|---|---|
| -19.4 | kJ/mol (basis unstated) | 0.05 | 15.72 (dft, calibrated) | 15.72 | ||||
| -19.21 | kJ/mol (basis unstated) | 0.005 | 15.72 (dft, calibrated) | 15.72 | ||||
| -19.11 | kJ/mol (basis unstated) | 0.005 | 15.72 (dft, calibrated) | 15.72 | ||||
| -18.87 | kJ/mol (basis unstated) | 0.005 | 15.72 (dft, calibrated) | 15.72 | ||||
| -18.73 | kJ/mol (basis unstated) | 0.005 | 15.72 (dft, calibrated) | 15.72 | ||||
| -14.9 | kJ/mol (basis unstated) | 0.05 | 15.72 (dft, calibrated) | 15.72 | ||||
| -14.69 | kJ/mol (basis unstated) | 0.005 | 15.72 (dft, calibrated) | 15.72 | ||||
| 4.09 | kJ/mol (basis unstated) | 0.005 | 15.72 (dft, calibrated) | 15.72 |
Sources
- Marlena Ostrowska, Gabriele Cacciamani, Critical evaluation and thermodynamic modeling of the Al-Co-Fe system, Journal of Alloys and Compounds 794, 553-568 (2019). doi:10.1016/j.jallcom.2019.04.170
- Alexandre Berche, Philippe Jund, Ab initio description of the different phases in the Al-Fe-V system: Structure, magnetism and thermodynamics, Computational Materials Science 149, 28-36 (2018). doi:10.1016/j.commatsci.2018.03.008