A study of the Al-Pd-Pt alloy system

B. Grushko, D. Kapush, S. Samuha, L. Meshi

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Abstract

The constitution of the Al-Pd-Pt alloy system was studied above 35 at.% Al at 700, 780, 900 and 1100 C. The experiments revealed the formation of wide extensions of the binary Al-Pd and Al-Pt phases but no ternary phases. Continuous regions are probably formed between the isostructural phases Al 4TM, Al21TM8, high-temperature AlTM, low-temperature AlTM and Al3TM5 (TM = Pd or Pt). The continuity between the Al3TM2 phases was revealed at 900 C, while at 1100 C the regions mutually extended from Al3Ni 2 and Al3Pd2 are separated by the ternary extension of Al2Pt. The latter phase was found to dissolve up to 24 at.% Pd, which resulted in a sharp decrease of its Al concentration. The Al-Pd ε-phase was found to extend up to 18 at.% Pt at practically constant Al, while the Al-Pt ξ-phase was found to extend up to 7 at.% Pd.

Original languageEnglish
Pages (from-to)125-129
Number of pages5
JournalJournal of Alloys and Compounds
Volume600
DOIs
StatePublished - 5 Jul 2014
Externally publishedYes

Keywords

  • Phase diagrams
  • Transition metal alloys and compounds

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