Revisiting the revised Ag-Pt phase diagram

Gus L.W. Hart*, Lance J. Nelson, Richard R. Vanfleet, Branton J. Campbell, Marcel H.F. Sluiter, Jan H. Neethling, Ezra J. Olivier, Soraya Allies, Candace I. Lang, Bryce Meredig, Christopher Wolverton

*Corresponding author for this work

Research output: Contribution to journalArticle

12 Scopus citations


Because of the important applications of platinum alloys and related platinum-group-metals phases, complete phase diagrams for these systems are important for materials engineering. The currently accepted phase diagram for the Ag-Pt system is questionable because of its disagreement with earlier experiments and because of its claim for a lone ordered structure at 53%-Pt which was not characterized and which contradicts both computational predictions and analogy to the isoelectronic system Cu-Pt. A complete re-examination of the Ag-Pt system by computational and experimental means suggests a phase diagram similar to the isoelectronic system Cu-Pt. The unknown compound, claimed to be 53%-Pt, is found to be the L11 structure at 50%-Pt.

Original languageEnglish (US)
Pages (from-to)325-332
Number of pages8
JournalActa Materialia
StatePublished - Feb 1 2017


  • Ag-Pt
  • Cluster expansion
  • Phase diagrams
  • Platinum alloys

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Polymers and Plastics
  • Metals and Alloys

Fingerprint Dive into the research topics of 'Revisiting the revised Ag-Pt phase diagram'. Together they form a unique fingerprint.

  • Cite this

    Hart, G. L. W., Nelson, L. J., Vanfleet, R. R., Campbell, B. J., Sluiter, M. H. F., Neethling, J. H., Olivier, E. J., Allies, S., Lang, C. I., Meredig, B., & Wolverton, C. (2017). Revisiting the revised Ag-Pt phase diagram. Acta Materialia, 124, 325-332.