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首页> 外文期刊>Journal of Nuclear Materials: Materials Aspects of Fission and Fusion >Structure and chemical durability of barium borosilicate glass-ceramics containing zirconolite and titanite crystalline phases
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Structure and chemical durability of barium borosilicate glass-ceramics containing zirconolite and titanite crystalline phases

机译：含锆钛矿和钛矿晶相的硼硅酸钡玻璃陶瓷的结构和化学耐久性

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摘要

In order to increase the solubility of actinides in the glass matrix, the effects of CaO, TiO2, and ZrSiO4 addition (abbreviated as CTZ, in the mole ratio of 2:2:1) on crystalline phases, microstructure, and chemical durability of barium borosilicate glass-ceramics were investigated. The results show that the samples possess both zirconolite-2M and titanite phase when the CTZ content is greater than or equal to 45 wt.%. For the glass ceramics with 45 wt.% CTZ (CTZ-45), only zirconolite-2M phase is observed after annealing at 680-740 degrees C for 2 h. The CTZ-45 possess zirconolite-2M and titanite phases after annealing at 700 degrees C first, and then annealing at 900-1050 degrees C for 2 h. Furthermore, the zirconolite-2M and titanite grains show a strip and brick shape, respectively. The CTZ-45 annealing at 950 degrees C shows the lower normalized leaching rates of B, Na and Nd when compared to that of CIZ-0 and CTZ-55. (C) 2015 Elsevier B.V. All rights reserved.
机译：为了增加act系元素在玻璃基质中的溶解度，添加CaO，TiO2和ZrSiO4（缩写为CTZ，摩尔比为2：2：1）对钡的晶相，微观结构和化学耐久性有影响研究了硼硅酸盐玻璃陶瓷。结果表明，当CTZ含量大于或等于45 wt。％时，样品同时具有Zirconolite-2M和钛矿相。对于具有45 wt。％CTZ的玻璃陶瓷（CTZ-45），在680-740摄氏度下退火2小时后，仅观察到锆石2M相。 CTZ-45在先于700摄氏度退火，然后在900-1050摄氏度退火2小时后，具有锆石2M和钛矿相。此外，锆石2M和钛矿晶粒分别显示为条形和砖形。与CIZ-0和CTZ-55相比，在950摄氏度下进行的CTZ-45退火显示出较低的B，Na和Nd标准化浸出率。 （C）2015 Elsevier B.V.保留所有权利。

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