Thermodynamic re-assessment of the Al-Ir system

T. Abe, C. Kocer, M. Ode, H. Murakami, Y. Yamabe-Mitarai, K. Hashimoto, H. Onodera

研究成果: Article査読

12 被引用数 (Scopus)

抄録

The thermodynamic assessment of the Al-Ir binary system was performed using the CALPHAD technique. The B2-AlIr phase was described, using the two sublattice model with the formula (Al,Ir,V a)1/2(Al,Ir,V a)1/2, while Al9Ir2, Al3Ir, Al13Ir4, Al45Ir13, Al28Ir9, and Al2.7Ir compounds were treated as stoichiometric compounds. The fcc-based phases (L10-AlIr, L12-Al3Ir, L12-AlIr3 and A1) were described using the four sublattice model with the formula, (Al,Ir)1/4(Al,Ir)1/4(Al,Ir)1/4(Al,Ir)1/4. From ab initio calculations (VASP) the formation enthalpies of the stable/metastable intermetallic phases involved in the Al-Ir system were estimated. The thermodynamic quantities, such as the phase equilibria, invariant reactions, and formation enthalpies of the intermetallic phases, were calculated using the obtained parameter set, and agree well with experimental data.

本文言語English
ページ(範囲)686-692
ページ数7
ジャーナルCalphad: Computer Coupling of Phase Diagrams and Thermochemistry
32
4
DOI
出版ステータスPublished - 2008 12
外部発表はい

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Computer Science Applications

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