Phase equilibria of the LA-NI-CU ternary system at 673 K: Thermodynamic modeling and experimental validation

Xuehui An, Qian Li, Jieyu Zhang, Shuanglin Chen, Ying Yang

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

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 languageEnglish
Title of host publicationTMS 2011 - 140th Annual Meeting and Exhibition, Supplemental Proceedings
Pages441-447
Number of pages7
StatePublished - 2011
Externally publishedYes
EventTMS 2011 - 140th Annual Meeting and Exhibition - San Diego, CA, United States
Duration: Feb 27 2011Mar 3 2011

Publication series

NameTMS Annual Meeting
Volume2

Conference

ConferenceTMS 2011 - 140th Annual Meeting and Exhibition
Country/TerritoryUnited States
CitySan Diego, CA
Period02/27/1103/3/11

Keywords

  • Hydrogen storage alloys
  • La-Ni-Cu system
  • Phase diagram
  • Thermodynamic modeling

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