Thermodynamic Properties of Manganese Germanides

Thermodynamic calculations of the Mn–Sn, Mn–Sr and Mg–Mn–{Sn, Sr} systems

“…In his paper [43], Mn-Sn phase diagram was reported in two figures; Mn 3 Sn phase was treated as stoichiometric and in the other figure Mn 3 Sn modelled as a solid solution. Moreover, the calculated activity at 1000°C of Miettinen [43] could not produce good fit with experimental data of Eremenko et al [47]. According to Okamoto's review [48] on the Mn-Sn phase diagram, the stable phases in this system are; (αMn), (βMn), (γMn), (δMn), MnSn 2 , (Mn (2−x) Sn), Mn 3 Sn 2 , (Mn 3 Sn) and β Sn.…”

“…According to these works, the composition ranges of (αMn) and (βMn) were 0.0-1.0 and 5.5-10 at.% Sn at 400°C, respectively. Miettinen [43] calculated Mn-Sn phase diagram using the experimental data from [32][33][34][44][45][46][47]. He [43] also described the liquid phase using the random solution model.…”

Thermodynamic Properties of Solid Binary Antimonides

“…From these results, Δ G ° 753 and Δ H ° 753 for MnSb are −38.4 and −26.8 kJ/mol, respectively; for Mn 2 Sb the values are −53.6 and −31.4 kJ/mol. Table shows calculated values of Δ H ° and Δ G ° for stoichiometric Mn 2 Sb, calculated on the basis of the experimental results of Eremenko et al and Askheim and Grønvold. , The values are highly suspect and should be used with caution.…”

Interaction of tungsten with iron–copper and iron–tin melts

“…Since the solubility of tungsten in melts over the range in question is low (Table 2), we assumed that iron activity in them corresponded to Sn-Fe and Cu-Fe binary systems. The associated calculations were performed using thermodynamic data [15][16][17]. The thermodynamic functions of copper-iron melts have been adequately studied, though the relevant literature places emphasis on mixing heats.…”