ICOSAHEDRAL ALCUFE ALLOYS - TOWARDS IDEAL QUASI-CRYSTALS

被引：170

作者：

CALVAYRAC, Y ^{[1
]}

QUIVY, A ^{[1
]}

BESSIERE, M ^{[1
]}

LEFEBVRE, S ^{[1
]}

CORNIERQUIQUANDON, M ^{[1
]}

GRATIAS, D ^{[1
]}

机构：

[1] LAB UTILISAT RAYONNEMENT ELECTROMAGNET,F-91405 ORSAY,FRANCE

来源：

JOURNAL DE PHYSIQUE | 1990年 / 51卷 / 05期

关键词：

D O I：

10.1051/jphys:01990005105041700

中图分类号：

学科分类号：

摘要：

The topological and chemical long range orders in the icosahedral Al65Cu20Fe15 alloy have been studied by X-ray powder diffraction. The spectacular enhancement of the quasicrystalline state by annealing of rapidly quenched samples have been quantitatively measured showing that the final annealed product fits the theoretical predictions of the ideal quasicrystal model within the instrument resolution. Whereas, after annealing at 1073 K, Al65Cu20Fe15 is two-phased - that makes difficult any fine study of the structure and the properties of the ideal icosahedral phase - a close composition Al63Cu25Fe12 leads to a single-phased icosahedral structure suitable for single quasicrystal X-ray and neutron diffraction analysis.

引用

页码：417 / 431

页数：15

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