STRUCTURE OF A HIGH-ORDER ICOSAHEDRAL APPROXIMANT PHASE IN MG-GA-AL-ZN SYSTEM

被引：18

作者：

EDAGAWA, K ^{[1
]}

SUZUKI, K ^{[1
]}

ICHIHARA, M ^{[1
]}

TAKEUCHI, S ^{[1
]}

KAMIYA, A ^{[1
]}

MIZUTANI, U ^{[1
]}

机构：

[1] NAGOYA UNIV,DEPT CRYSTALLINE MAT SCI,CHIKUSA KU,NAGOYA 46401,JAPAN

来源：

PHILOSOPHICAL MAGAZINE LETTERS | 1991年 / 64卷 / 02期

关键词：

D O I：

10.1080/09500839108214673

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The melt-spun Mg39.5Ga16.4Al4.1Zn40.0 ribbon consists entirely of micrograins of an icosahedral phase (I-phase). The calorimetric and X-ray diffraction studies have shown that the I-phase undergoes an exothermic transformation to an approximant crystalline phase at 630 K on heating at a rate of 20 K min-1. Detailed structural analysis of the crystalline phase has revealed that the phase corresponds to a 3/2-2/1-2/1 rational approximant of I-phase, which has the orthorhombic C-type Bravais lattive with large cell parameters, a = 36.93 +/- 0.06 angstrom, b = 22.83 +/- 0.04 angstrom and c = 22.96 +/- 0.04 angstrom.

引用

页码：95 / 103

页数：9

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