Abstract
Phase equilibria and thermodynamic properties in the La-Ni-Cu ternary system were studied by coupling thermodynamic modeling and experimental validation. A set of self-consistent thermodynamic descriptions for phases in the La-Ni-Cu system were obtained on the basis of those of three constituent binaries and ternary experimental data in literature. The isothermal section at 673 K and the enthalpy of mixing of liquid calculated from the currently established ternary thermodynamic description were compared favorably with available experimental data. Three alloy samples in the La-Ni-Cu system were then selected, synthesized and annealed at 673 K in order to further validate the calculated phase equilibria. These alloys were analyzed with ICP, XRD, OM, SEM/BSE and EDS, and the experimental results agreed well with the calculated phase equilibrium relationships.
Original language | English |
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Title of host publication | Supplemental Proceedings |
Subtitle of host publication | Materials Fabrication, Properties, Characterization, and Modeling |
Publisher | John Wiley and Sons Inc. |
Pages | 441-447 |
Number of pages | 7 |
Volume | 2 |
ISBN (Electronic) | 9781118062142 |
ISBN (Print) | 9781118029466 |
DOIs | |
State | Published - Apr 20 2011 |
Externally published | Yes |
Keywords
- Hydrogen storage alloys
- La-Ni-Cu system
- Phase diagram
- Thermodynamic modeling