Al7Ni15: enthalpy of formation

2 accepted literature formation-enthalpy value(s) (model 2).

Systems: Al–Ni

Literature values

Enthalpy of formation of Al7Ni15 reported in the literature (2)
ValuePhase as printedT (K)ClassMethodSystemSourceLocationQuote
-40.5672 kJ/mol (basis unstated)Al0.35Ni0.75298.15modelAl–Ni[1] Ansara 1988Table 1, p. 5, row 15
report
-37.4 kJ/mol (basis unstated)Al0.35Ni0.75298.15modelAl–Ni[1] Ansara 1988
cites Hultgren 1973		Table 1, p. 5, row 16
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.

Uncertainty budget of the literature values of Al7Ni15
ValueUnitPrintedReadingMethod (class, basis)CompositionScatterConversionEffective
-40.5672kJ/mol (basis unstated)5.000e-511.7 (model_calculated, calibrated)11.7
-37.4kJ/mol (basis unstated)5.000e-411.7 (model_calculated, calibrated)11.7

Sources

  1. I. Ansara, B. Sundman, P. Willemin, Thermodynamic modeling of ordered phases in the NiAl system, Acta Metallurgica 36, 977-982 (1988). doi:10.1016/0001-6160(88)90152-6