The Structure and Formation of Al0.77Mn0.19Yb0.04 Quasi-crystal by Quenching Technique under Static High Pressure
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摘要: 利用静高压（4.2 GPa）熔态（1 300 ℃）淬火（102 ℃/s）方法，对含稀土的铝锰合金Al0.77Mn0.19Yb0.04进行了研究。首次发现了准晶T相得形成。利用选区透射电子衍射技术，对合金中准静态的结构对称性进行了观察和分析。根据X射线和电子衍射对其衍射峰进行了指标化。使用扫描电镜和能谱技术进行了成份分析。Abstract: The T-phase quasi-crystal containing rare earth element of Al0.77Mn0.19Yb0.04 alloy has been obtained by the quenching (100 ℃/s) technique at fusion state (1 300 ℃) under static high pressure (4.2 GPa). The symmetry pattern of the quasi-crystal structure was observed and analyzed by selected area transmission electron diffraction technique; indices of the diffraction peak were obtained via XRD and electron diffraction method; the content each component was obtained from SEM and energy spectrum technique.
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Key words:
- AlMnYb /
- T-quasi-crystal /
- high pressure /
- quenching of fusion state
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Yang L Y. J Phys F (GB), 1987, 17(6): 97. Su Wenhui, Zhang Qiang. High Pressure Reseach, 1990, 4: 432. Bencel P A. Phys Rev B, 1987, 33(12): 7917 Fung K K, Teng C M, Zhou Y Q. J Phys F: Met Phys, 1986, 16: 233. -
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