Formation of Complex Intermetallics in the Al-Rich Part of Al-Pt-Ru

D. Kapush, S. Samuha, L. Meshi, T. Ya Velikanova, B. Grushko

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

The study confirmed the stability of the previously reported ternary C-phase ($$Pm\bar{3}$$Pm3¯, a = 0.77353(3) nm for Al73.5Pt10Ru16.5), whose composition was found to range between Al73Pt6Ru21 and Al73.5Pt14.5Ru12. The thermodynamically stable decagonal phase was revealed for the first time at 700-900 °C in a small compositional region around Al78Pt6Ru16. It belongs to the D4 structural type (1.65 nm periodicity in the specific direction). The metastable Al-Pt χ-phase (P31c) is stabilized by the addition of only ~1.5 at.% Ru and extends up to ~12 at.% Ru. The lattice parameters for Al76Pt18.6Ru5.4 are a = 1.2256(4) and c = 2.7331(4) nm.

Original languageEnglish
Pages (from-to)327-332
Number of pages6
JournalJournal of Phase Equilibria and Diffusion
Volume36
Issue number4
DOIs
StatePublished - 28 Aug 2015

Keywords

  • alloy phase diagrams
  • intermetallics
  • quasicrystals

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