Structure and crystallization behavior of glasses in the BaO-B2O3-Al2O3 systemстатьяИсследовательская статья
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Дата последнего поиска статьи во внешних источниках: 16 ноября 2017 г.
Аннотация:The structure and the devitrification behavior of barium aluminoborate glasses, examined by Fourier transform infrared spectroscopy, differential thermal analysis and X-ray diffraction are reported. The glass compositions are expressed by the general formula: (50-x/2)BaO·(50-x/2)B2O3·xAl2O3 with x = 2, 4 and 8. All the as-quenched glasses were phase separated. Aluminum acting as glass former gives a more polymerized structure increasing the glass stability with respect to the devitrification process. Surface crystallization was found to be dominant for all glasses, forming βBaB2O4 nanocrystals as the main crystalline phase.