Ca6.24Mg3.76Sn7: enthalpy of formation

2 accepted literature formation-enthalpy value(s) (model 1, DFT 1).

Systems: Ca–Mg–Sn

Literature values

Enthalpy of formation of Ca6.24Mg3.76Sn7 reported in the literature (2)
ValuePhase as printedT (K)ClassMethodSystemSourceLocationQuote
-57.16 kJ/mol-atomCa6.24Mg3.76Sn7298.15modelCalphadCa–Mg–Sn[1] Kozlov 2008Table 2, p. 5, row 15
report
-56.9 kJ/mol-atomCa6.24Mg3.76Sn7298.15DFTfirst-principlesCa–Mg–Sn[1] Kozlov 2008
cites Arroyave 2006		Table 2, p. 5, row 14
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 Ca6.24Mg3.76Sn7
ValueUnitPrintedReadingMethod (class, basis)CompositionScatterConversionEffective
-57.16kJ/mol-atom0.0053.9 (model_calculated, calibrated)3.9
-56.9kJ/mol-atom0.058.395 (dft, calibrated)8.395

Sources

  1. A. Kozlov, M. Ohno, R. Arroyave, Z.K. Liu, R. Schmid-Fetzer, Phase equilibria, thermodynamics and solidification microstructures of Mg–Sn–Ca alloys, Part 1: Experimental investigation and thermodynamic modeling of the ternary Mg–Sn–Ca system, Intermetallics 16, 299-315 (2008). doi:10.1016/j.intermet.2007.10.010