Preparation of decagonal Al-Ni-Co single quasicrystal by Czochralski method

Y. Yokoyama, R. Note, S. Kimura, A. Inoue, K. Fukaura, H. Sunada

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45 Citations (Scopus)

Abstract

We constructed a partial isothermal phase diagram including a decagonal (d-) phase in the Al-Ni-Co system and determined the composition of the liquid in equilibrium with the stoichiometric d-phase. The d-phase is formed through a peritectic reaction between the B2 phase and the liquid phase. A seed d-phase prepared by selecting an optimum composition of the liquid phase was used for growing a large-scale d-quasicrystal by the Czochralski method. As a result, we have product a single decagonal quasicrystal with the size of 60 mm in length and 1 to 7 mm in diameter and the mean composition of Al72.2Ni12.1Co15.7.

Original languageEnglish
Pages (from-to)943-949
Number of pages7
JournalMaterials Transactions, JIM
Volume38
Issue number11
DOIs
Publication statusPublished - 1997 Nov

Keywords

  • Aluminum-nickel-cobalt alloy system
  • Czochralski method
  • Isothermal section
  • Phase diagram
  • Single decagonal quasicrystal

ASJC Scopus subject areas

  • Engineering(all)

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