Structure and Properties of Borosilicate Glass Containing Cesium and/or Strontium Oxides

IF 0.8 4区 材料科学 Q4 MATERIALS SCIENCE, CERAMICS
N. F. Karpovich, A. S. Aloy, P. V. Slastikhina, T. I. Koltsova, V. A. Orlova, N. G. Tyurnina, Z. G. Tyurnina
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Abstract

The study object is borosilicate glass with separate and combined inclusion of Cs and/or Sr oxides in amounts of 5, 10 and 15 wt %. This can be used in the fractionation scheme of liquid high-level waste from the spent nuclear fuel reprocessing. The main attention was paid to their compliance with the quality criteria established in the regulatory document NP-019-15, when studying the physicochemical, thermophysical and mechanical properties of synthesized glass. The glass structure changes slightly relative to the structure of the initial glass frit according to Raman spectroscopy. The exception was glass containing 15 wt % Cs2O, which contained new bands in the Raman spectra, in addition there were an increase in its molar volume and a decrease in the glass transition temperature. However, these changes had virtually no effect on the thermophysical and mechanical characteristics. The obtained data showed that the glass properties in the studied range of Cs and/or Sr oxides concentrations satisfy the current quality criteria for the product in the form of 137Cs and 90Sr vitrified concentrates after fractionation of liquid HLW.

Abstract Image

含铯和/或锶氧化物的硼硅酸盐玻璃的结构和性能
研究对象为硼硅酸盐玻璃,分别含有5%、10%和15%的Cs和/或Sr氧化物。该方法可用于乏核燃料后处理中液体高放废物的分馏方案。在研究合成玻璃的物理化学、热物理和机械性能时,主要关注它们是否符合法规文件NP-019-15中建立的质量标准。根据拉曼光谱,玻璃结构相对于初始玻璃块的结构有轻微的变化。但含15wt % Cs2O的玻璃在拉曼光谱中有新的谱带,摩尔体积增大,玻璃化转变温度降低。然而,这些变化对热物理和力学特性几乎没有影响。所得数据表明,所研究的Cs和/或Sr氧化物浓度范围内的玻璃化性能满足现行产品的质量标准,即液体高浓缩铀分馏后的137Cs和90Sr玻璃化精矿。
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来源期刊
Glass Physics and Chemistry
Glass Physics and Chemistry 工程技术-材料科学:硅酸盐
CiteScore
1.20
自引率
14.30%
发文量
46
审稿时长
6-12 weeks
期刊介绍: Glass Physics and Chemistry presents results of research on the inorganic and physical chemistry of glass, ceramics, nanoparticles, nanocomposites, and high-temperature oxides and coatings. The journal welcomes manuscripts from all countries in the English or Russian language.
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