Cr2Ti: enthalpy of formation
5 accepted literature formation-enthalpy value(s) (model 5).
Systems: Cr–Ti
Literature values
| Value | Phase as printed | T (K) | Class | Method | System | Source | Location | Quote |
|---|---|---|---|---|---|---|---|---|
| -10 kJ/mol (basis unstated) | α-Cr0.667Ti0.333 | 298.15 | model | semi-empirical model | Cr–Ti | [1] Ghosh 2002 cites F 1988 | Table 2, p. 6, row 1 report | |
| -9.856 kJ/mol (basis unstated) | α-Cr0.667Ti0.333 | 298.15 | model | phase diagram modeling | Cr–Ti | [1] Ghosh 2002 | Table 2, p. 6, row 5 report | |
| -6.835 kJ/mol (basis unstated) | α-Cr0.667Ti0.333 | 298.15 | model | phase diagram modeling | Cr–Ti | [1] Ghosh 2002 cites Lee 1999 doi | Table 2, p. 6, row 3 report | |
| -6.754 kJ/mol (basis unstated) | α-Cr0.667Ti0.333 | 298.15 | model | phase diagram modeling | Cr–Ti | [1] Ghosh 2002 cites Zhuang 2002 | Table 2, p. 6, row 4 report | |
| -0.593 kJ/mol (basis unstated) | α-Cr0.667Ti0.333 | 298.15 | model | phase diagram modeling | Cr–Ti | [1] Ghosh 2002 cites Saunders 1994 | Table 2, p. 6, row 2 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 |
|---|---|---|---|---|---|---|---|---|
| -10 | kJ/mol (basis unstated) | 5.000e-4 | 3.9 (model_calculated, calibrated) | 3.9 | ||||
| -9.856 | kJ/mol (basis unstated) | 5.000e-4 | 3.9 (model_calculated, calibrated) | 3.9 | ||||
| -6.835 | kJ/mol (basis unstated) | 5.000e-4 | 3.9 (model_calculated, calibrated) | 3.9 | ||||
| -6.754 | kJ/mol (basis unstated) | 5.000e-4 | 3.9 (model_calculated, calibrated) | 3.9 | ||||
| -0.593 | kJ/mol (basis unstated) | 5.000e-4 | 3.9 (model_calculated, calibrated) | 3.9 |
Sources
- G. Ghosh, Thermodynamic and kinetic modeling of the Cr-Ti-V system, JPE 23, 310-328 (2002). doi:10.1361/105497102770331569