Zur Thermochemie von Legierungen

Thermodynamic characterization of Al–Cr, Al–Zr, and Al–Cr–Zr alloy systems

“…Chart 37 quotes two other experimental thermodynamic studies for AI-Zr. 3S, 39 The results from these were not considered by him to be completely reliable, and some question was raised as to the reference state of the elements. Both studies, though, yielded values of a magnitude similar to those in these calculations.…”

Standard Gibbs Energy of Formation of Zn<SUB>8</SUB>La Determined by Solution Calorimetry and Measurement of Heat Capacity from Near Absolute Zero Kelvin

“…In order to calculate the phase diagram of the Mg-Zn-La ternary system, the Gibbs energies of formation, Á f G 2) and in a tin melt, 3) respecievely. Schneider et al 4) ) by a direct reaction method. There are discrepancies among theses data, [2][3][4] considering their experimental errors.…”

“…Schneider et al 4) ) by a direct reaction method. There are discrepancies among theses data, [2][3][4] considering their experimental errors. Terpilowski,5) Chiotti and Stevens, 6) and Kouzuka 7) measured the activities of the melt of the Mg-Zn binary system by the electromotive method 5,6) and vapor pressure.…”

Thermodynamic measurements in the Mg–Zn system

“…The enthalpies of formation of MgZn, MgZn 2 and Mg 2 Zn 11 were measured by Schneider et al [3] by direct reaction calorimetry. Magnesium and zinc powders in stoichiometric quantities were placed into the calorimeter and the reaction of formation was performed at 643 K. The samples after reaction were checked by chemical analysis, metallographic studies and X-ray diffraction measurements.…”

“…The first measurements on MgZn 2 were performed by Biltz and Hohorst by acid solution calorimetry [2] and later on MgZn, MgZn 2 and Mg 2 Zn 11 by Schneider et al by direct reaction calorimetry [3]. King and Kleppa determined the enthalpies of formation of the MgZn and MgZn 2 phases at 298 K using tin bath drop-solution calorimetry method [4].…”