Cu4Ti: enthalpy of formation

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

Systems: Cu–Ti

Literature values

Enthalpy of formation of Cu4Ti reported in the literature (2)
ValuePhase as printedT (K)ClassMethodSystemSourceLocationQuote
-5.53 kJ/mol (basis unstated) ± 1.07Cu4Ti298.15experimentalCu–Ti[1] Turchanin 2008
cites Kaufman 1978 doi		Table 3, p. 8, row 1
report
-7.346 kJ/mol (basis unstated)Cu4Ti298.15modelCu–Ti[1] Turchanin 2008Table 3, p. 8, row 6
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 Cu4Ti
ValueUnitPrintedReadingMethod (class, basis)CompositionScatterConversionEffective
-5.53kJ/mol (basis unstated)1.075.000e-417.5 (unknown, calibrated)17.5
-7.346kJ/mol (basis unstated)5.000e-419.5 (model_calculated, calibrated)19.5

Sources

  1. M. A. Turchanin, P. G. Agraval, A. R. Abdulov, Thermodynamic assessment of the Cu-Ti-Zr system. I. Cu-Ti system, Powder Metall Met Ceram 47, 344-360 (2008). doi:10.1007/s11106-008-9026-2