A family of hexagonal approximants of decagonal quasicrystals

被引：10
|
作者：
Mo, ZM
Kuo, KH
机构：
[1] Chinese Acad Sci, Beijing Lab Electron Microscopy, Inst Phys, Beijing 100080, Peoples R China
[2] Dalian Univ Technol, Dept Mat Engn, Dalian 116023, Peoples R China
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2000年 / 294卷
关键词：
hexagonal crystal; quasicrystal; approximant; Al alloy;
D O I：
10.1016/S0921-5093(00)01333-2
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
By means of high resolution electron microscopy, the hexagonal phases with about the same c = 12.4-12.6 Angstrom but different a parameters (kappa :17.674 Angstrom; lambda :28.382 Angstrom; upsilon :40.687 Angstrom) in Al-rich Al-TM (TM: transitional metal) alloys were found to consist of similar icosahedral cluster of about 30 Angstrom in size. Using the known atomic sites of kappa and lambda in this cluster, the crystal structure of upsilon was solved by direct methods of X-ray diffraction analysis. Various icosahedral connections in this: cluster were analyzed. (C) 2000 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：242 / 245
页数：4
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