Differential calorimetric analysis of the binary system Sb–Zn

The experimental study of the system Sb–Zn by differential calorimetry made it possible to plot the whole phase diagram. We found the stability domains of existence of the stoichiometric compound SbZn and the solid solutions which extend on both sides from the compositions corresponding to Sb₃Zn₄ (forms γ and β) and Sb₂Zn₃ (forms η and ζ). Sb₃Zn₄ and Sb₂Zn₃ are both congruent melting compounds at 566 and 568 °C respectively with an eutectic transformation at 563 °C:

liquid(43% Zn) ↔ Sb₃Zn₄(γ) + Sb₂Zn₃(η).

Sb₂Zn₃(ζ) is formed at 407 °C starting from Sb₃Zn₄(β) and zinc. The decomposition, by cooling, occurs around 360 °C.