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首页> 外文期刊>Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites >Laser induced modification on 40BaO-45B(2)O(3)-15TiO(2) glass composition
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Laser induced modification on 40BaO-45B(2)O(3)-15TiO(2) glass composition

机译：激光诱导对40BaO-45B（2）O（3）-15TiO（2）玻璃成分的改性

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摘要

This paper describes a study concerning the permanent modification of 40BaO-45B(2)O(3)-15TiO(2) (mol%) glass composition when irradiated by a continuous CO2 laser beam. Three parameters of the permanent modification and crystallization processes induced by irradiation were studied: laser power, irradiation time and the presence of micrograins of beta-BaB2O4 (beta-BBO) crystalline phase on the glass sample surface prior to irradiation. The geometry of permanent deformation induced by irradiation depended mainly on the laser power and sample surface condition. Crystallization of the irradiated region was observed when laser power at around 0.72 W and an irradiation time of around 300 s were used. The structural characterization performed by micro-Raman and X-ray diffraction techniques showed the formation of only the BaTi(BO3)(2) crystalline phase on the as-polished sample. On the other hand, when beta-BBO microcrystals were homogeneously dispersed onto the glass surface, the formation of the beta-BBO phase was induced. In this condition, the beta-BBO becomes the main crystalline phase and presents a certain degree of texture. (c) 2006 Elsevier B.V. All rights reserved.
机译：本文介绍了有关连续式CO2激光束照射时40BaO-45B（2）O（3）-15TiO（2）（mol％）玻璃成分的永久改性的研究。研究了由辐照引起的永久改性和结晶过程的三个参数：激光功率，辐照时间和辐照前玻璃样品表面上存在β-BaB2O4（β-BBO）结晶相的微粒。辐照引起的永久变形的几何形状主要取决于激光功率和样品表面状况。当使用约0.72W的激光功率和约300s的照射时间时，观察到照射区域的结晶。通过显微拉曼和X射线衍射技术进行的结构表征表明，在抛光后的样品上仅形成BaTi（BO3）（2）晶相。另一方面，当β-BBO微晶均匀地分散在玻璃表面上时，诱导了β-BBO相的形成。在这种条件下，β-BBO成为主要的结晶相，并呈现出一定程度的质感。 （c）2006 Elsevier B.V.保留所有权利。

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