Abstract
In this work, the thermal stability of Cu-In alloys with 45.0 and 41.2 at.% In nominal compositions was investigated by differential scanning calorimetry (DSC), scanning electron microscopy, wavelength dispersive spectroscopy, and in-situ synchrotron x-ray powder diffraction (S-PXRD) over a temperature range from 25 up to 400 A degrees C. The studied samples are mainly composed of a Cu11In9 phase together with minor amounts of the B phase (based on the NiAs-Ni2In type structure) and, in one of the samples, with a minor amount of pure In. No evidence of the Cu10In7 (41.2 at.% In) phase was detected, not even in the sample with 41.2 at.% In nominal overall composition. The combined use of the S-PXRD and DSC techniques allowed us to identify two phase transitions involving the Cu11In9 phase, one of them corresponding to the reaction at T = 290 A degrees C and the other to the peritectic reaction at T = 311 A degrees C.
Original language | English |
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Journal | Journal of Phase Equilibria and Diffusion |
Volume | 35 |
Issue number | 1 |
Pages (from-to) | 2-10 |
Number of pages | 9 |
ISSN | 1547-7037 |
DOIs | |
Publication status | Published - 2014 |
Keywords
- CHEMISTRY,
- MATERIALS
- METALLURGY
- SYSTEM
- DIFFUSION
- CU11IN9
- CU10IN7
- Cu-In alloys
- differential scanning calorimetry (DSC)
- intermetallic compounds
- phase transitions
- Alloys
- Copper compounds
- Differential scanning calorimetry
- Intermetallics
- Phase transitions
- Scanning electron microscopy
- X ray powder diffraction
- Cu-in alloys
- In compositions
- In-situ synchrotrons
- Nominal composition
- Peritectic
- Phase identification
- Temperature range
- Type structures
- Copper alloys
- THERMAL stability
- Research
- HASH(0x3b4edc8)