The Zr–Sn binary system: New experimental results and thermodynamic assessment

Rosa Jerlerud Pérez , Caroline Toffolon-Masclet , Jean-Marc Joubert (1) , Bo Sundman (2)

1 ICMPE - Institut de Chimie et des Matériaux Paris-Est
2 CIRIMAT - Centre interuniversitaire de recherche et d'ingenierie des matériaux

The Zr–Sn binary system has been reinvestigated by several experimental techniques: X-ray diffraction, electron probe micro-analysis, mass density and calorimetry measurements. The existence of a miscibility gap inside the homogeneity domain of the phase (Zr5Sn3–Zr5Sn4) has been confirmed. It has been also shown that Zr substitution on the Sn sublattice is responsible for the non-stoichiometry of the A15 phase (Zr4Sn). The temperature of the peritectoid reaction Zr+A15 $ Zr has been determined to be at 1216 K that is 40 below the temperature reported in the literature. All these new experimental data have been taken into account for a new thermodynamic assessment of this system.

Mots clés: Sn–Zr Binary system; X-ray; Calorimetry; Thermodynamic assessment; Miscibility gap

Domaines: Matériaux

Rosa Jerlerud Pérez, Caroline Toffolon-Masclet, Jean-Marc Joubert, Bo Sundman. The Zr–Sn binary system: New experimental results and thermodynamic assessment. Calphad, 2008, 32 (3), pp.593-601. ⟨10.1016/j.calphad.2008.04.001⟩. ⟨hal-03590786⟩