Enthalpies of formation in the Al-Ni-Ru system by direct reaction synthesis calorimetry

Hsin-Ning Su, Philip Nash*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

18 Scopus citations

Abstract

The enthalpies of formation of ternary compounds in the Al-Ni-Ru system have been determined by high temperature reaction calorimetry. The composition dependence of the enthalpy of formation and lattice parameter of the compounds with B2 structure were determined in the region of 0.40 ≤ Al ≤ 0.5 mole fraction. Unusual behavior is observed for the composition dependence of the enthalpy of formation suggesting that formation of a miscibility gap in the B2 phase field occurs. For some compositions, the experimental enthalpy data therefore represent the formation enthalpy of the metastable B2 phase.

Original languageEnglish
Pages (from-to)217-222
Number of pages6
JournalJournal of Alloys and Compounds
Volume403
Issue number1-2
DOIs
StatePublished - 10 Nov 2005

Keywords

  • B2 phase
  • Calorimeter
  • Calphad
  • Defect
  • Enthalpy
  • Heat of formation
  • Heat of formation, Al-Ni-Ru
  • Miedema
  • Miscibility gap
  • Thermocalc
  • Wagner-Schottky

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