Large single-grain AlCoNi quasicrystals grown by the Czochralski method

被引：35

作者：

Gille, P ^{[1
]}

Dreier, P ^{[1
]}

Gräber, M ^{[1
]}

Scholpp, T ^{[1
]}

机构：

[1] Univ Munich, Inst Kristallog & Angew Mineral, D-80333 Munich, Germany

来源：

JOURNAL OF CRYSTAL GROWTH | 1999年 / 207卷 / 1-2期

关键词：

quasicrystal; decagonal phase; Al-Co-Ni; Czochralski method;

D O I：

10.1016/S0022-0248(99)00348-6

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

The single crystal growth of decagonal quasicrystals in the Al-Co-Ni system has been investigated using the Czochralski method. Using a ceramic tip instead of a native seed, single-grain quasicrystals of average composition Al71Co18Ni11 and approximately 1 cm(3) in size have been grown. Very low pulling rates (0.25-0.5 mm/h) were used. Axial segregation and structural perfection were investigated by electron-probe microanalysis and neutron diffraction. The liquidus temperature of the starting melt and composition of the decagonal phase agree well with the published phase diagram data. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：95 / 101

页数：7

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