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

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

doi:10.2320/matertrans1989.38.943

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

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

Institute for Materials Research (IMR)

Research output: Contribution to journal › Article › peer-review

48 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 Al_72.2Ni_12.1Co_15.7.

Original language	English
Pages (from-to)	943-949
Number of pages	7
Journal	Materials Transactions, JIM
Volume	38
Issue number	11
DOIs	https://doi.org/10.2320/matertrans1989.38.943
Publication status	Published - 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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10.2320/matertrans1989.38.943

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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.",

keywords = "Aluminum-nickel-cobalt alloy system, Czochralski method, Isothermal section, Phase diagram, Single decagonal quasicrystal",

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T1 - Preparation of decagonal Al-Ni-Co single quasicrystal by Czochralski method

AU - Yokoyama, Y.

AU - Note, R.

AU - Kimura, S.

AU - Inoue, A.

AU - Fukaura, K.

AU - Sunada, H.

PY - 1997/11

Y1 - 1997/11

N2 - 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.

AB - 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.

KW - Aluminum-nickel-cobalt alloy system

KW - Czochralski method

KW - Isothermal section

KW - Phase diagram

KW - Single decagonal quasicrystal

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

Abstract

Keywords

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