Thermochemistry of (germanium + tellurium)

First-principles study of the structural, electronic and elastic properties of W5Si3

“…The present calculated formation enthalpies of the W 5 Si 3 -prototype structure are À0.145 eV/atom (GGA) and À0.237 eV/atom (LDA). It can be seen that the GGA result is in very good agreement with the experimental value of À0.163 eV/atom [11].…”

“…140) [10]. The thermodynamic properties (formation enthalpy [11,12] and thermal expansion [13]) of W 5 Si 3 have already been investigated. The integrated interdiffusion coefficients [14] and the activation energies for the interdiffusion [15] of W 5 Si 3 phase have been studied as well.…”

Thermodynamic properties of silicides V. Fluorine-combustion calorimetric determination of the standard molar enthalpy of formation at the temperature 298.15 K of trimolybdenum monosilicide Mo3Si, and a critical assessment of its thermodynamic properties

“…to their hexafluorides come from the massic energies of fluorination, −37956 J·g −1 (17) and −9386 J·g −1 , (18) respectively. The quantity DU(blank) (17) was determined in separate experiments.…”

“…The (18), and E(18)=−0.032 V. All the D f G°ms in equations (19) and (20), with the exception of D f G°m(Fe 2 B), are available in modern critically evaluated tables. (34) The missing quantity is derived from the following electrochemical-cell reactions studied by Ohmori and Moriyama: (36) …”

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

“…Kematick [2] reported the standard enthalpies of formation at 298 K for the silicides, combining the latest heat capacity data with the relation between silicon vapor pressure and temperature obtained by high temperature mass spectrometry. 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 .…”