Authors: Wojcieh Gierlotka YuChih Huang SinnWen Chen
Publish Date: 2008/10/28
Volume: 39, Issue: 13, Pages: 3199-
Abstract
Knowledge of the phase equilibria of the SnSbAg ternary system is of fundamental importance in SnSb–based solder applications Thermodynamic models of the ternary SnSbAg system and the binary SbAg and SnAg systems are developed using the calculation of phase diagrams CALPHAD method The calculated 250 °C isothermal section liquidus projection and thermodynamic properties are in good agreement with the experimental results There are two continuous solid solutions formed between the εAg3Sn and εAg3Sb and ζAg17Sb3 and ζAg5Sn phases but there is no ternary compound There are three class II ternary invariant reactions L + Sb ↔ ε + βSnSb L + βSnSb ↔ Sn3Sb2 + ε and L + Sn3Sb2 ↔ Sn + ε Their reaction temperatures are 379 °C 313 °C and 231 °C respectively
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