Oriented surface nucleation in diopside glass
Oriented surface nucleation in diopside glass
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DOI：
10.1016/j.jnoncrysol.2021.120661
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发表时间：
2021-04-12
影响因子：
3.5
通讯作者：
Mueller, R.
中科院分区：
文献类型：
--
作者：
Tielemann, C.;Busch, R.;Mueller, R.
用扫描电子显微镜、电子背散射衍射、透射电子显微镜和激光扫描显微镜研究了抛光透辉石玻璃表面的定向晶化。[001]平行于玻璃表面的取向偏好被检测到单独生长的透辉石晶体，甚至小至700 nm的大小。这一发现表明，晶体取向发生在最外表面层没有晶体-晶体相互作用，并表明晶体取向是定向成核的结果。根据表面制备，检测到[100]垂直于表面的单峰晶体取向分布或[100]和[010]垂直于玻璃表面的双峰分布。它还表明，晶体取向的程度增加，降低表面粗糙度。透辉石晶体的取向可以用不同晶面的界面能来解释。
Oriented surface crystallization on polished diopside glass surfaces has been studied with scanning electron microscopy, electron backscatter diffraction, transmission electron microscopy and laser scanning microscopy. An orientation preference of [001] parallel to the glass surface was detected for separately growing diopside crystals even as small as 700 nm in size. This finding shows that crystal orientation occurs in the outermost surface layer without crystal-crystal interaction and indicates that the crystal orientation is a result of oriented nucleation. Depending on surface preparation, monomodal crystal orientation distributions with [100] perpendicular to the surface or bimodal distributions with [100] and [010] perpendicular to the glass surface were detected. It was also shown that the degree of crystal orientation increases with decreasing surface roughness. The observed orientation of diopside crystals could be explained in terms of the interfacial energies of different crystal faces.