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Thermodynamic assessments of the Ni-Pt and Al-Ni-Pt systems
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Physical Metallurgy.ORCID iD: 0000-0002-4521-6089
2009 (English)In: Calphad, ISSN 0364-5916, E-ISSN 1873-2984, Vol. 33, no 3, 450-456 p.Article in journal (Refereed) Published
Abstract [en]

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.
Keyword [en]
Thermodynamics, CALPHAD, First-principles, Ni-Pt, Al-Ni-Pt, nickel-platinum alloys, augmented-wave method, phase-diagram, behavior, au
Identifiers
URN: urn:nbn:se:kth:diva-18816DOI: 10.1016/j.calphad.2009.06.002ISI: 000270346200002Scopus ID: 2-s2.0-69249215132OAI: oai:DiVA.org:kth-18816DiVA: diva2:336863
Note
QC 20100525Available from: 2010-08-05 Created: 2010-08-05 Last updated: 2017-12-12Bibliographically approved

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