Baqué, Laura3; Torrado, D.4; Aurelio, G.5; Lamas, D. G.4; Arico, S. F.6; Craievich, A. F.7; Sommadossi, S.4
1 Department of Energy Conversion and Storage, Technical University of Denmark2 Fundamental Electrochemistry, Department of Energy Conversion and Storage, Technical University of Denmark3 Applied Electrochemistry, Department of Energy Conversion and Storage, Technical University of Denmark4 Comahue National University5 Centro Atómico Bariloche6 CAC-CNEA7 University of São Paulo
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.
Journal of Phase Equilibria and Diffusion, 2014, Vol 35, Issue 1, p. 2-10
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)