Thermodynamic investigation of the Cu-Zr system

Katsunori Yamaguchi, Young Cheol Song, Toshiaki Yoshida, Kimio Itagaki

Research output: Contribution to journalArticle

41 Citations (Scopus)

Abstract

High temperature heat contents of the Cu-Zr system alloys were measured over temperature range from 880 to 1470 K using a drop calorimeter. The enthalpies of fusion of some solid compounds were determined by the heat content-temperature plots and the entropies of fusion were calculated. Enthalpies of mixing in the liquid Cu-Zr system were measured by high temperature reaction calorimetry in the concentration range of xZr = 0.182-0.667 at 1443 K. This system has negative enthalpies of mixing over the measured concentration range. The standard enthalpies of formation at 298.15 K of Cu9Zr2, Cu51Zr14, Cu8Zr3, Cu10Zr7 and CuZr2 compounds were determined from the obtained data for the heat contents and enthalpies of mixing. Based on the experimental data, published thermodynamic and phase diagram data, the Cu-Zr binary system was analyzed using Redlich-Kister polynomial equation. The thermodynamic properties and the phase diagram calculated from the optimized parameters agree well with the experimental data.

Original languageEnglish
Pages (from-to)73-79
Number of pages7
JournalJournal of Alloys and Compounds
Volume452
Issue number1
DOIs
Publication statusPublished - 2008 Mar 6
Externally publishedYes

Keywords

  • Calorimeter
  • Enthalpy
  • Heat content
  • Phase diagram
  • Thermodynamic property

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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