International Symposium on the Thermodynamics of Nuclear Materials

Determination of the thermodynamic stability of TiB2

“…Several investigators have experimentally determined the heat of formation of TiB 2 at 298 K [8,[26][27][28][29][30][31][32][33][34][35][36]. The assessed values of f H • 298 are presented in Refs.…”

“…Several investigators have reported the standard enthalpy of formation of TiB 2 at 298 K ( f H • 298 TiB 2 ) derived from different techniques, viz. equilibrium measurements [8,[26][27][28], calorimetry [29][30][31][32] and vapour pressure techniques [33][34][35][36]. There is a large spread in these values (as large as ∼190 kJ mol −1 ).…”

“…Huber [31] performed oxygen bomb calorimetry of TiB 2 and reported a value of −324 kJ mol −1 for f H • 298 TiB 2 . Akhachinskij and Chirin [32] used the direct preparation of TiB 2 from its constituent elements in a Calvet calorimeter in order to derive a value of −319 kJ mol −1 for f H • 298 TiB 2 . Guzman et al [49] quoted the value of −323.8 kJ mol −1 for f H • 298 TiB 2 .…”