Paper PI-11

Prediction of Phase Equilibria in the Ag-In-Pd System in Comparison with Experimental Data

Zemanová Adéla^1,2, Vřešťál Jan¹, Semenova Olga³, Ipser Herbert³, Kroupa Aleš⁴

¹Institute of Theoretical and Physical Chemistry, Faculty of Science, Masaryk University, Kotlářská 2, 611 37 Brno, Czech Republic

²Institute of Material Chemistry, Faculty of Chemistry, Brno University of Technology Purkyňova 118, 612 00 Brno, Czech Republic

³Institut für Anorganische Chemie, Universität Wien, Währingerstr. 42, A-1090 Wien, Austria

⁴Institute of Physics of Materials, Academy of Sciences of Czech Republic, Žižkova 22, 616 62  Brno, Czech Republic

Prediction of phase diagram at 700°C in the system Ag-In-Pd was made on the basis of binary thermodynamic data and it was compared with phase equilibrium data, determined  experimentally. 

A combination of powder X-ray diffractometry (XRD), differential thermal analysis (DTA), metallography, and electron-probe microanalysis (EPMA) was used. Ternary phase equilibria and phase compositions were determined by powder X-ray diffractometry. Several samples were investigated by electron-probe microanalysis to fix the phase boundaries. For the construction of the liquidus surface in the entire composition range and the investigation of ternary phase reactions, samples were analysed by differential thermal analysis.

Optimization of thermodynamic parameters for Ag-In-Pd in further isothermal cross section at 200 °C, 500 °C on the basis of experimental phase equilibrium data is in progress. For thermodynamic calculations, program Thermo-Calc was used.

This work is part of COST Action 531 and is supported by the COST projects Nos. OC 531.001 and OC 531.002 of Ministry of Education of Czech Republic and by the Austrian Science Foundation under Project No P15620.