Phase equilibria and solidification of ternary Sn-Bi-Ag alloys
Journal
Journal of Alloys and Compounds
Journal Volume
497
Journal Issue
1-2
Start Page
110
End Page
117
ISSN
09258388
Date Issued
2010
Author(s)
Abstract
The Sn-Bi-Ag system is an important ternary system for electronic products, and this study investigates its phase equilibria and solidification behavior. Sn-Bi-Ag alloys were prepared and equilibrated at 210 °C and 400 °C, and their equilibrium phases were determined. Thermodynamic descriptions of the ternary Sn-Bi-Ag system are developed from the results determined in this study and those available in the literature. Isothermal sections and liquidus projection are then calculated using the determined Sn-Bi-Ag thermodynamic descriptions. Solidified microstructures of three Sn-Bi-Ag alloys are examined. It is found that the solidification paths cut through the monovariant line, instead of following the monovariant line as expected. © 2010 Elsevier B.V. All rights reserved.
Subjects
Calphad
Phase equilibria
Solder
Solidification
Type
journal article