Phase equilibria in the ternary In-Ni-Sn system at 700 °C.
C Schmetterer1, A Zemanova2, H Flandorfer3
1Department of Inorganic Chemistry/Materials Chemistry, University of Vienna, Währinger Strasse 42, Vienna 1090, Austria; Forschungszentrum Jülich, IEK-2, 52425, Germany.
Intermetallics
|April 19, 2016
Summary
This study investigated the In-Ni-Sn ternary system at 700°C, confirming the InNi6Sn5 phase and identifying a new solid solution field for In2NiSn. Continuous solid solutions were observed between binary phases.
Area of Science:
- Materials Science
- Metallurgy
- Physical Chemistry
Background:
- Understanding phase equilibria in ternary systems is crucial for materials development.
- The In-Ni-Sn system is relevant for various technological applications.
- Previous studies provided limited data on the phase equilibria at elevated temperatures.
Purpose of the Study:
- To experimentally determine the phase equilibria of the ternary In-Ni-Sn system at 700°C.
- To establish the isothermal section of the In-Ni-Sn system at 700°C.
- To compare experimental results with CALPHAD (Calculation of Phase Diagrams) modeling.
Main Methods:
- Experimental investigation using X-ray diffraction (XRD).
- Microstructural analysis via scanning electron microscopy (SEM), electron microprobe analysis (EMPA), and energy dispersive X-ray spectroscopy (EDX).
- CALPHAD modeling for theoretical validation.
Main Results:
- Confirmation of the ternary phase InNi6Sn5.
- Identification of a large solid solution field based on binary InNi, incorporating the previously reported In2NiSn.
- Establishment of continuous solid solutions between isostructural binary phases (Ni3SnLT-InNi3 and Ni3Sn2HT-InNi2).
Conclusions:
- The experimental isothermal section at 700°C provides a comprehensive phase diagram for the In-Ni-Sn system.
- CALPHAD modeling successfully reproduced the experimental findings, validating the thermodynamic database.
- The study refines the understanding of phase formation and solid solution behavior in the In-Ni-Sn system.
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