Thermodynamic properties of tungsten silicides in the temperature range 1200?2200� K

Determination of the standard free energies of formation for tungsten silicides by EMF measurements using lithium silicate liquid electrolyte

“…(4)- (6). Consistency in measurements can be ensured by comparing measured EMF-temperature relation (6) with the following Eq.…”

“…Calorimetric determination of the standard enthalpy of formation at 298 K for W 5 Si 3 was reported by Tomaszkiewicz et al [3], while that for WSi 2 was done by Robins and Jenkins [4] and by O'Hare [5]. A work on high temperature heat capacity by Bondarenko et al [6] provides the data for both W 5 Si 3 and WSi 2 . However, the data for WSi 2 are not consistent with the results by Callanan et al [7], in which experimentally determined low temperature heat capacity was combined with the reported values by Mezaki et al [8].…”

Thermodynamic assessment of the Nb–Si–Ti system

“…Comparison of the calculated enthalpy, H m (T)-H m (aNb 5 Si 3 , 25 C), with the measured values by Bondarenko et al for phases (a) aNb 5 Si 3 and bNb 5 Si 3 [35] and (b)NbSi 2[36].…”