Interaction of Ag-In-Sn Solders with Palladium Substrates: A Phase Diagram Approach

Adela Zemanova 1Ales Kroupa 3Jan Vrestal 1Herbert Ipser 2Christoph Luef 2Hans Flandorfer 2

1. Masaryk University, Faculty of Sciences, Kotlarska 2, Brno 61137, Czech Republic
2. University of Vienna, Department of Inorganic Chemistry - Materials Chemistry, Waehringerstr. 42, Wien A-1090, Austria
3. Czech Academy of Sciences, Institute of Physics of Materials (IPM), Zizkova 22, Brno 61662, Czech Republic

Abstract

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.

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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
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