Experimental Phase Diagram of the Ag-Se-Sn System at 250, 400 and 550 °C
Journal of Phase Equilibria and Diffusion(2022)
Abstract
The ternary phase diagram Ag-Se-Sn was re-investigated experimentally. The current study was designed to contribute to a better understanding of phase equilibria in isothermal sections at 250, 400 and 550 °C using long-term annealed samples. An intermediate liquid region was observed at 550 °C in agreement with older published vertical sections of the ternary phase diagram Ag-Se-Sn. A huge homogeneity range in ternary intermetallic phase Ag 8 Se 6 Sn at 250 °C was determined by SEM/EDX analysis of long term annealed samples and confirmed by XRD measurements. A second ternary phase AgSe 2 Sn was observed at each of the studied temperatures. Complete isothermal sections at 250, 400 and 550 °C were constructed in the scope of this paper.
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Key words
Ag-Se-Sn phase diagram,Ag8SeSn6 phase,SEM-EDX,XRD
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