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首页> 外文期刊>European Journal of Glass Science and Technology, PartB. Physics and Chemistry of Glasses >Density measurement of simulated radioactive waste glass by the Archimedean immersion method using molten chloride salts
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Density measurement of simulated radioactive waste glass by the Archimedean immersion method using molten chloride salts

机译：使用熔融氯化物盐的阿基米德浸没法测量模拟放射性废玻璃的密度

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摘要

The densities of two simulated radioactive waste glasses and melts were determined between 298 and 1278 K by the Archimedean immersion method for annealed glasses at room temperature, dilatometric measurements for glasses in the temperature range from 373 K to the glass transition region and Archimedean densitometry using a molten chloride salt for liquids above 825 K. At temperatures above 1079 K the density of a stable liquid can be measured with a precision of 0-3%. The molar volume of the waste glass melt between 1079 and 1278 K is consistent with both the high temperature extrapolation of the molar volume at the glass transition temperature and the value estimated using partial molar volumes reported previously, which has been obtained using double-bob Archimedean densitometry. The temperature dependence of the molar volume (dV/dT) between the glass transition temperature and 1278 K is significantly larger than that calculated using partial molar thermal expansivities in the previous model. This suggests that the thermal expansivity of borosilicate melts is temperature dependent.
机译：通过室温下退火玻璃的阿基米德浸没法，在373 K到玻璃化转变区域的温度范围内的玻璃的热膨胀测量以及使用熔融氯化物盐用于825 K以上的液体。在1079 K以上的温度下，稳定液体的密度可以0-3％的精度进行测量。废玻璃熔体的摩尔体积介于1079和1278 K之间，与玻璃化转变温度下的摩尔体积的高温外推以及使用先前报道的使用双鲍勃阿基米德获得的部分摩尔体积估算的值一致。密度测定法。玻璃化转变温度与1278 K之间的摩尔体积（dV / dT）的温度依赖性明显大于先前模型中使用部分摩尔热膨胀系数计算的温度依赖性。这表明硼硅酸盐熔体的热膨胀性与温度有关。

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