ELECTRON-DIFFRACTION AND ELECTRON-MICROSCOPE STUDY ON DECAGONAL QUASI-CRYSTALS ON AL-NI-FE ALLOYS

被引：32

作者：

TANAKA, M ^{[1
]}

TSUDA, K ^{[1
]}

TERAUCHI, M ^{[1
]}

FUJIWARA, A ^{[1
]}

TSAI, AP ^{[1
]}

INOUE, A ^{[1
]}

MASUMOTO, T ^{[1
]}

机构：

[1] TOHOKU UNIV,INST MAT RES,SENDAI,MIYAGI 980,JAPAN

来源：

JOURNAL OF NON-CRYSTALLINE SOLIDS | 1993年 / 153卷

关键词：

D O I：

10.1016/0022-3093(93)90322-O

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Decagonal quasicrystals of Al70Ni10+xFe20-x(0 less-than-or-equal-to x less-than-or-equal-to 10) were investigated by convergent-beam electron diffraction (CBED) and transmission electron microscopy (TEM). It was revealed by the CBED method that the alloys with 0 less-than-or-equal-to x less-than-or-equal-to 7 belong to the space group of the noncentrosymmetric P10m2BAR and those with 7 < x less-than-or-equal-to 10 to the centrosymmetric P10/mmm. High resolution electron microscope images detected the existence of a specific pentagonal atom cluster in all the alloys investigated. Dark-field microscopy disclosed that the change in space group at x almost-equal-to 7.5 takes place upon the sudden decrease of the domain size or the rapid mixing of the atom clusters with the positive and negative polarities.

引用

页码：98 / 102

页数：5

共 7 条

[1] QUASICRYSTAL WITH ONE-DIMENSIONAL TRANSLATIONAL SYMMETRY AND A TENFOLD ROTATION AXIS [J].