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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 >Structural and vibrational characterization of medieval like glass samples
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Structural and vibrational characterization of medieval like glass samples

机译：中世纪玻璃样的结构和振动表征

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摘要

Within the framework of a project aimed to develop protective coatings for antique glass windows, three glass varieties of medieval-like composition were prepared using recipes deduced from archaeometric studies and different amounts of potassium for fluxing (15-20-25 K _2O wt.%). Batches were melted in mullite crucibles using an electric furnace at 1350 °C, the glass was fast cooled in air and annealed at temperatures 20 °C higher than the sample glass transition temperatures (726, 702 and 683 °C for V1, V2 and V3, respectively). The chemical composition of the glass was determined by X-Ray Fluorescence Spectroscopy (XRF) and the glass transition temperature was checked by differential thermal analysis (DTA). X-Ray Powder Diffraction (XRPD) data and vibrational spectroscopic experiments (FT-IR and Raman) revealed a direct dependence of glass de-polymerization on potassium content. In particular, the Raman data were interpreted on the basis of SiO _4 structural units Q ~n and the polymerization index I _p.
机译：在旨在开发用于仿古玻璃窗的保护涂层的项目框架内，使用从考古学研究得出的配方和不同量的助熔钾（15-20-25 K _2O wt。％ ）。使用电炉将批料在莫来石坩埚中于1350°C熔化，玻璃在空气中快速冷却并在比样品玻璃转变温度（V1，V2和V3的726、702和683°C）高20°C的温度下退火， 分别）。通过X射线荧光光谱法（XRF）确定玻璃的化学组成，并通过差热分析（​​DTA）检查玻璃化转变温度。 X射线粉末衍射（XRPD）数据和振动光谱实验（FT-IR和Raman）表明玻璃解聚与钾含量直接相关。特别地，拉曼数据是基于SiO_4结构单元Q〜n和聚合指数I_p来解释的。

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