Abstract
A thermodynamic assessment for the AgSbSn solder alloy system has been attempted through the least squares optimization procedure taking available thermodynamic and phase equilibria information into account. The low-order AgSb and AgSn binary systems have been re-evaluated and thermodynamic properties of the ternary alloys have been extrapolated from these of the three binary systems using the Muggianu model. The calculated phase diagrams and thermodynamic quantities of the AgSb and AgSn binary systems show very good agreement with the experimental data, and liquidus projection and isoenthalpy curves in the ternary liquid alloys are well reproduced with the assessed thermodynamic model parameters.
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