Experimental and thermodynamic modeling study of phase equilibria in the ZnO–SnO–SnO2–SiO2 system.
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| Title: | Experimental and thermodynamic modeling study of phase equilibria in the ZnO–SnO–SnO |
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| Authors: | Shevchenko, Maksym1 (AUTHOR) m.shevchenko@uq.edu.au, Ilyushechkin, A.2 (AUTHOR), Jak, Evgueni1 (AUTHOR) |
| Source: | Journal of the American Ceramic Society. Sep2025, Vol. 108 Issue 9, p1-30. 30p. |
| Subjects: | Electron probe microanalysis, Phase equilibrium, Zinc tin oxide, Zinc oxide, Copper |
| Abstract: | Experimental investigation and thermodynamic modeling of the phase equilibria in the ZnO–SnO–SnO2–SiO2 system have been undertaken to characterize Sn behavior in the high‐Zn slags for recycling of waste electrical and electronic materials (WEEE) through the black copper process. Phase equilibria data at 870–1746°C were obtained through equilibration of synthetic mixtures in sealed silica ampoules or open crucibles, on Ir wires, Pt, Pt‐Ir, Mo, and Re foils, followed by rapid quenching, and electron probe X‐ray microanalysis. Phase equilibria and liquidus isotherms of the ZnO–"SnO"–SiO2 system in equilibrium with Sn metal, ZnO–"SnO2"–SiO2 system in air, and ZnO–SnO–SnO2–SiO2 in equilibrium with Au–Sn metal were measured in the quartz/tridymite/cristobalite SiO2, cassiterite SnO2, zincite ZnO (with minor solubility of SnO2), willemite Zn2SiO4, and spinel Zn2SnO4 phase fields. [ABSTRACT FROM AUTHOR] |
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| Database: | Engineering Source |
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| Abstract: | Experimental investigation and thermodynamic modeling of the phase equilibria in the ZnO–SnO–SnO2–SiO2 system have been undertaken to characterize Sn behavior in the high‐Zn slags for recycling of waste electrical and electronic materials (WEEE) through the black copper process. Phase equilibria data at 870–1746°C were obtained through equilibration of synthetic mixtures in sealed silica ampoules or open crucibles, on Ir wires, Pt, Pt‐Ir, Mo, and Re foils, followed by rapid quenching, and electron probe X‐ray microanalysis. Phase equilibria and liquidus isotherms of the ZnO–"SnO"–SiO2 system in equilibrium with Sn metal, ZnO–"SnO2"–SiO2 system in air, and ZnO–SnO–SnO2–SiO2 in equilibrium with Au–Sn metal were measured in the quartz/tridymite/cristobalite SiO2, cassiterite SnO2, zincite ZnO (with minor solubility of SnO2), willemite Zn2SiO4, and spinel Zn2SnO4 phase fields. [ABSTRACT FROM AUTHOR] |
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| ISSN: | 00027820 |
| DOI: | 10.1111/jace.20695 |
