Building a Thermodynamic Database for Platinum-Based Superalloys: Part III

Authors: Preußner, J.; Prins, S.N.; Wenderoth, M.; Völkl, R.; Glatzel, U.

Source: Platinum Metals Review, Volume 52, Number 1, January 2008 , pp. 48-51(4)

Publisher: Johnson Matthey

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Abstract:

Work is being done at Mintek, the University of Leeds and the University of Bayreuth to build up a platinum-aluminium-chromium-ruthenium (Pt-Al-Cr-Ru) database for the prediction of phase diagrams for further alloy development by obtaining good thermodynamic descriptions of all of the possible phases in the system. Binary descriptions were combined, allowing extrapolation into the ternary systems, and experimental phase equilibrium data were compared with calculated results. Part I of this series of papers (1) addressed the Pt-Al-Ru system, and Part II (2) the Pt-Cr-Ru system. This final paper (Part III) deals with progress towards a platinum-aluminium-chromium-nickel (Pt-Al-Cr-Ni) database at the University of Bayreuth, using thermodynamic calculations from first principles to deal with the problem of sparse data. The Pt-Al-Cr-Ru and Pt-Al-Cr-Ni databases will eventually be merged to give a Pt-Al-Cr-Ni-Ru database.

Document Type: Research article

DOI: 10.1595/147106708X255167

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