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

• Published in: Calphad 2008-09, Vol.32 (3), p.593-601
• Main Authors: Jerlerud Pérez, R., Toffolon-Masclet, C., Joubert, J.-M., Sundman, B.
• Format: Article
• Language: English
• Subjects: Assessments; Binary systems; Calorimerry; Calorimetry; Chemical Sciences; Computer simulation; Cross-disciplinary physics: materials science; rheology; Density; Engineering mechanics; Exact sciences and technology; Material chemistry; Materials science; Mathematical models; Mechanical and thermal engineering; Mekanisk och termisk energiteknik; Miscibility gap; Phase diagrams and microstructures developed by solidification and solid-solid phase transformations; Phase diagrams of metals and alloys; Phase transformations; Physics; Sn-Zr Binary system; TECHNOLOGY; TEKNIKVETENSKAP; Teknisk mekanik; Thermodynamic assessment; Thermodynamics; X-ray; Zirconium
• ISSN: 0364-5916; 1873-2984; 1873-2984
• DOI: 10.1016/j.calphad.2008.04.001

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 η phase (Zr 5Sn 3–Zr 5Sn 4) has been confirmed. It has been also shown that Zr substitution on the Sn sublattice is responsible for the non-stoichiometry of the A 15 phase (Zr 4Sn). The temperature of the peritectoid reaction β Zr+A15↔α Zr has been determined to be at 1216 K that is 4 0 ∘ 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.