Phase equilibria of the cu-in system I: Experimental investigation
Journal
Journal of Phase Equilibria
Journal Volume
14
Journal Issue
1
Pages
14-21
Date Issued
1993
Author(s)
Abstract
Portions of the Cu-In phase diagram were redetermined experimentally, specifically in the compositional region from 32.0 to 100 at % In. The experimental techniques used were differential scanning calorimetry (DSC), differential thermal analysis (DTA), powder X-ray diffraction (XRD), and electron probe microanalysis (EPMA). The results indicate that the phase Cu11ln9 is stable to low temperatures rather than decomposing at 157 °C. The existence of the"phase bundle" at compositions ranging from 32 to 38 at.% In was not supported by our experimental data. Only two phases were found to exist: η at temperatures higher than 305 to 389 °C, and η at lower temperatures. Minor phase boundary adjustments were made in this region. The peritectic temperature for the formation of Cu11ln9 was found to be 307 ± 1 °C, and the L = Cu11ln9 + (In) eutectic temperature was found to be 154 ± 1 °C. In the study to determine the temperature stability of Cu11lns9, it was found that Culm exists at low temperatures, but the stability was not investigated. © 1993 ASM International.
Type
journal article