Formation of Quasicrystalline Aluminium-Vanadium and Aluminium-Chromium Fine Particles by Gas-Evaporation Technique
Formation of Quasicrystalline Aluminium-Vanadium and Aluminium-Chromium Fine Particles by Gas-Evaporation Technique
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气体蒸发技术形成准晶铝钒和铝铬细颗粒
DOI：
10.1143/jjap.28.195
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发表时间：
1989
影响因子：
1.5
通讯作者：
K. Mihama
中科院分区：
文献类型：
--
作者：
T. Okazaki;T. Maki;Y. Saito;K. Mihama
本文用气相蒸发法制备了二十面体相的微粒，并用电子显微镜进行了研究。颗粒呈球形，直径范围为20至300纳米，并显示出与不规则条纹的特征对比。Penrose镶嵌的基本六面体边长在Al-V系为0.474± 0.002nm，在Al-Cr系为0.473 ± 0.003nm。虽然准晶颗粒大多为单相，但在Al-V系中也观察到了二十面体相和晶相（β-Al 6V）的复合颗粒。从两相的取向关系出发，讨论了钒在二十面体相中的原子位置。
Fine particles in icosahedral phase have been prepared by the gasevaporation method, and studied by electron microscopy. The particles are spherical ranging from 20 to 300 nm in diameter and show a characteristic contrast with an irregular striation. Edge lengths of the fundamental hexahedron in the Penrose tiling are 0.474±0.002 nm in the Al–V system and 0.473 ± 0.003 nm in the Al–Cr system. Though most of the quasicrystalline particles are in a single phase, composite particles of the icosahedral phase and the crystalline phase(β–Al6V) are also observed in the Al–V system. From the orientation relationship between the two phases, atomic sites of vanadium in the icosahedral phase are discussed.