Chemical effects on periodicity and structure of decagonal phases in Al-Ni- and Al-Co-based alloys

A. P. Tsai, A. Inoue, T. Masumoto

Research output: Contribution to journalArticlepeer-review

33 Citations (Scopus)

Abstract

The structures of decagonal phases in binary Al-Ni and Al-Co systems and ternary Al70Nix TM1-x(TM = Co, Rh or Ir) alloys have been studied by electron diffraction. In the Al-Co system, the periodicity of the decagonal phase is 1.6 nm in Al80Co20, and 0.8 nm in Al76.5Co23.5 and Al72Co28, suggesting that the stacking rule between Al and Co atoms is different along the c axis for the three alloys. In the ternary systems, diffuse streaks and periodicity systematically vary with the atom substitution of Co for Ni and Ir for Ni, indicating that Ni, Co and Ir atoms play different roles in the decagonal phase and exhibit various sorts of chemical order with Al atoms.

Original languageEnglish
Pages (from-to)161-167
Number of pages7
JournalPhilosophical Magazine Letters
Volume71
Issue number2
DOIs
Publication statusPublished - 1995 Feb

ASJC Scopus subject areas

  • Condensed Matter Physics

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