Orientation mapping of quasicrystalline materials is demonstrated using crystalline approximant structures in the technique of electron backscatter diffraction (EBSD). The approximant-based orientations are symmetrised according to the rotational point group of the quasicrystal, including the visualization of orientation maps using proper colour keys for quasicrystal symmetries. Alternatively, approximant-based orientation data can also be treated using pseudosymmetry post-processing options in the EBSD system software, which enables basic grain size estimations. Approximant-based orientation analyses are demonstrated for icosahedral and decagonal quasicrystals.

中文翻译：

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使用电子背散射衍射基于近似法确定准晶体的取向

在电子背散射衍射 (EBSD) 技术中，使用晶体近似结构演示了准晶体材料的取向映射。基于近似的取向根据准晶的旋转点群对称，包括使用准晶对称性的适当颜色键可视化取向图。或者，也可以使用 EBSD 系统软件中的伪对称后处理选项处理基于近似的取向数据，从而实现基本的晶粒尺寸估计。针对二十面体和十边形准晶证明了基于近似的取向分析。