Phase equilibria of the Sn-Sb binary system
Journal
Journal of Electronic Materials
Journal Volume
37
Journal Issue
7
Start Page
992
End Page
1002
ISSN
03615235
Date Issued
2008
Author(s)
Abstract
Sn-Sb alloys are important high-temperature solders. However, inconsistencies are found in the available phase diagrams, and some phase boundaries in the Sn-Sb system have not been determined. Sn-Sb alloys were prepared, equilibrated at 160°C to 300°C, and the equilibrium phases and their compositions were determined. The β-SnSb phase has a very wide compositional homogeneity range, and its composition varies from Sn-47.0at.%Sb to Sn-62.8at.%Sb. There is no order-disorder transformation of the β-SnSb phase. There are three peritectic reactions in the Sn-Sb system, L + Sb = β-SnSb, L + β-SnSb = Sn3Sb2, and L + Sn 3Sb2 = Sn, and their temperatures are 424°C, 323°C, and 243°C, respectively. Thermodynamic models of the Sn-Sb binary system were developed using the CALPHAD approach based on the experimental results of this study and the data in the literature. The calculated phase diagram and thermodynamic properties are in good agreement with the experimental determinations. © 2008 TMS.
Subjects
CALPHAD
DTA
Sb
Sn
Thermodynamics
Publisher
Springer Science and Business Media, LLC
Type
journal article