Interaction of Ag-In-Sn Solders with Palladium Substrates: A Phase Diagram Approach
|Adela Zemanova 1, Ales Kroupa 3, Jan Vrestal 1, Herbert Ipser 2, Christoph Luef 2, Hans Flandorfer 2|
1. Masaryk University, Faculty of Sciences, Kotlarska 2, Brno 61137, Czech Republic
In order to understand the interaction of lead-free Ag-In-Sn solders with palladium substrates one has to know the quaternary Ag-In-Pd-Sn phase diagram, and for that all the constituent binaries and ternaries. For this purpose, enthalpies of mixing were determined calorimetrically for liquid ternary Ag-Pd-Sn and In-Pd-Sn and quaternary Ag-In-Pd-Sn alloys. These experimental results were taken into account as an input for the optimization in CALPHAD - type phase diagram calculations of the above-mentioned two ternary phase diagrams. These were then combined with an earlier optimization of the Ag-In-Pd system as well as with literature data on the Ag-In-Sn system to obtain a first idea of the phase diagram of the quaternary Ag-In-Pd-Sn alloy system. The calculations were supported by a number of specifically devised experiments.
Presentation: poster at E-MRS Fall Meeting 2005, Symposium H, by Adela Zemanova
See On-line Journal of E-MRS Fall Meeting 2005
Submitted: 2005-05-18 18:43 Revised: 2009-06-07 00:44