Sc3Si5: enthalpy of formation

2 accepted literature formation-enthalpy value(s) (experimental 1, model 1); experimental median -71.2 kJ/mol-atom (n = 1).

Systems: Sc–Si

Literature values

Enthalpy of formation of Sc3Si5 reported in the literature (2)
ValuePhase as printedT (K)ClassMethodSystemSourceLocationQuote
-71.2 kJ/mol-atomαSc3Si5298.15experimentalAcid solution calorimetrySc–Si[1] Qin 2015
cites Golutvin 1984		Table 2, p. 3, row 1
report
-60.9 kJ/mol-atomαSc3Si5298.15modelCalculatedSc–Si[1] Qin 2015Table 2, p. 3, row 7
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 Sc3Si5
ValueUnitPrintedReadingMethod (class, basis)CompositionScatterConversionEffective
-71.2kJ/mol-atom0.053.2 (solution_reaction_calorimetry, calibrated)3.2
-60.9kJ/mol-atom0.053.9 (model_calculated, calibrated)3.9

Sources

  1. Aning Qin, Dandan Liu, Chong Chen, Shuhong Liu, Yong Du, Man Wang et al., Heat contents of Sc5Si3 and ScSi intermetallics and thermodynamic modeling of the Sc–Si system, J Therm Anal Calorim 119, 1315-1321 (2015). doi:10.1007/s10973-014-4216-2