DECAGONAL PHASES - NON-QUASI-CRYSTALLINE MICROCRYSTALLINE STATE IN AN AL-CU-CO-SI ALLOY

被引:61
作者
LAUNOIS, P
AUDIER, M
DENOYER, F
DONG, C
DUBOIS, JM
LAMBERT, M
机构
[1] CENS,CEA,CNRS,LAB LEON BRILLOUIN,F-91191 GIF SUR YVETTE,FRANCE
[2] ECOLE NATL SUPER ELECTROCHIM & ELECTROMET GRENOBLE,THERMODYNAM & PHYSICOCHIM MET LAB,CNRS,UA 29,F-38402 ST MARTIN DHERES,FRANCE
[3] ECOLE MINES,SCI & GENIE MAT LAB,F-54042 NANCY,FRANCE
来源
EUROPHYSICS LETTERS | 1990年 / 13卷 / 07期
关键词
D O I
10.1209/0295-5075/13/7/010
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We present high-resolution electron microscopy and X-ray diffraction studies of the A & u. all Coy at room. temSperatur e. The sample is found periodic in one direction c and presents tenfold symmetry in the I = 0 diffraction plane perpendicular to this direction. The two complementary techniques show that the sample is not in a 2D quasi-crystalline state but in a microcrystalline state, which restores the overall tenfold symmetry in diffraction pattern. On the basis of our present results, we discuss some relationships that could exist between microcrystalline and quasi-crystalline phases. © 1990 IOP Publishing Ltd.
引用
收藏
页码:629 / 634
页数:6
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