Thermodynamic assessments of the Ni-Pt and Al-Ni-Pt systems
2009 (English)In: Calphad, ISSN 0364-5916, E-ISSN 1873-2984, Vol. 33, no 3, 450-456 p.Article in journal (Refereed) Published
The Ni-Pt system is assessed using the CALPHAD method. The four fcc-based phases, i.e. disordered solid solution phase, Ni3Pt-L1(2), NiPt-L1(0) and NiPt3-L1(2), are described by a four-sublattice model. The calculated thermodynamic properties and order/disorder phase transformations are in good agreement with the experimental data. In order to facilitate the assessment, first-principles pseudopotential calculations are also performed to calculate the enthalpy of formation at 0 K, and comparison with the assessed values is discussed. By combining the assessments of Al-Ni and Al-Pt, the Al-Ni-Pt ternary system is assessed within a narrow temperature range, focusing on the fcc-based phases and their phase equilibria with B2 phase.
Place, publisher, year, edition, pages
2009. Vol. 33, no 3, 450-456 p.
Thermodynamics, CALPHAD, First-principles, Ni-Pt, Al-Ni-Pt, nickel-platinum alloys, augmented-wave method, phase-diagram, behavior, au
IdentifiersURN: urn:nbn:se:kth:diva-18816DOI: 10.1016/j.calphad.2009.06.002ISI: 000270346200002ScopusID: 2-s2.0-69249215132OAI: oai:DiVA.org:kth-18816DiVA: diva2:336863
QC 201005252010-08-052010-08-052011-01-12Bibliographically approved