Effects of Al:Si and (Al + Na):Si ratios on the properties of the international simple glass,part I: Physical properties |
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| Authors: | Joelle T. Reiser Xiaonan Lu Benjamin Parruzot Hongshen Liu Tamilarasan Subramani Huseyin Kaya Ryan M. Kissinger Jarrod V. Crum Joseph V. Ryan Alexandra Navrotsky Seong H. Kim John D. Vienna |
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| Affiliation: | 1. Energy and Environment Directorate, Pacific Northwest National Laboratory, Richland, WA, USA;2. Department of Chemical Engineering, Materials Research Institute, Pennsylvania State University, University Park, PA, USA;3. School of Molecular Sciences and Center for Materials of the Universe, Arizona State University, Tempe, AZ, USA;4. Department of Materials Science & Engineering, Pennsylvania State University, University Park, PA, USA |
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| Abstract: | Understanding composition-structure-property relationships of high-alumina nuclear waste glasses are important for vitrification of nuclear waste at the Hanford Site. Two series of glasses were designed, one with varying Al:Si ratios and the other with (Al + Na):Si ratios based on the international simple glass (ISG, a simplified nuclear waste model glass), with Al2O3 ranging from 0 to 23 mol% (0 to 32 wt%). The glasses were synthesized and characterized using electron probe microanalysis, X-ray photoelectron spectroscopy, small angle X-ray scattering, high-temperature oxide melt solution calorimetry, and infrared spectroscopy. Glasses were crystal free, and the lowest Na2O and Al2O3 glass formed an immiscible glass phase. Evolution of various properties—glass-transition temperature, percentage of 4-coordinated B, enthalpy of glass formation—and infrared spectroscopy results indicate that structural effects differ based on the glass series. |
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| Keywords: | aluminosilicates borosilicate glass international simple glass phase separation thermal analysis X-ray methods |
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