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Surface crystallization of cordierite from glass studied by high-temperature X-ray diffraction and electron backscatter diffraction (EBSD)

机译:通过高温X射线衍射和电子背散射衍射(EBSD)研究了堇青石在玻璃中的表面结晶

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摘要

A glass with the composition of stoichiometric cordierite (2Al _2O_3?2MgO?5SiO_2) shows surface crystallization during thermal annealing. High temperature X-ray diffraction (HT-XRD) was performed on a compact sample. The surface crystallization is further studied using scanning electron microscopy (SEM) and electron backscatter diffraction (EBSD). The formation of an oriented layer at the immediate surface is not observed. This is in disagreement with previous reports in the literature. Topographical effects during crystallization and EBSD pattern acquisition are analyzed by atomic force microscopy.
机译:具有化学计量的堇青石(2Al _2O_3→2MgO·5SiO_2)组成的玻璃在热退火期间显示出表面结晶。在紧凑的样品上进行了高温X射线衍射(HT-XRD)。使用扫描电子显微镜(SEM)和电子背散射衍射(EBSD)进一步研究了表面结晶。没有观察到在直接表面上形成取向层。这与文献中先前的报道不同。通过原子力显微镜分析结晶过程中的形貌效应和EBSD图案。

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