Elemental behaviors of γ-irradiated borosilicate glass as a vitrification model

IF 2.1 3区材料科学 Q2 MATERIALS SCIENCE, CERAMICS

International Journal of Applied Glass Science Pub Date : 2023-04-04 DOI:10.1111/ijag.16632

Jiandong Zhang, Xiaoyu Xia, Fanrong Zeng, Xiaochong Xi, Xiaoyang Zhang, Yuhe Pan, Yuxi Sun, Wenbao Jia, Haibo Peng

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引用次数: 1

Abstract

Borosilicate glass has been extensively studied due to its unique properties of solidifying high-level radioactive waste (HLW). However, the responses of borosilicate glass under γ irradiation are not fully understood. In this work, NBS9 and NBS10 glass were irradiated by γ-rays at absorbed doses of 8 kGy and 800 kGy, respectively. Scanning electronic microscopy, energy dispersive X-ray, and time-of-flight secondary ion mass spectrometry (ToF-SIMS) were used to observe the surface morphology and elemental distributions. The results show that the borosilicate glass remains stable until the absorbed dose was up to 800 kGy. At 800 kGy, the samples precipitate particles composed of Na and O on the surface. Na and B near the surface are significantly reduced under γ-rays irradiation. The results indicate that the effects of γ irradiation on glass vitrification are obvious with certain accumulated doses. The changes of glass structures and elemental distributions by γ-ray irradiation are also dependent on glass compositions.

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γ辐照硼硅酸盐玻璃的元素行为作为玻璃化模型

硼硅酸盐玻璃因其独特的固化高放射性废物的性能而受到广泛的研究。然而，硼硅酸盐玻璃在γ辐照下的反应尚不完全清楚。本研究采用吸收剂量分别为8kgy和800kgy的γ射线照射NBS9和NBS10玻璃。利用扫描电镜、能量色散x射线和飞行时间二次离子质谱(ToF-SIMS)观察了表面形貌和元素分布。结果表明，在吸收剂量达到800 kGy时，硼硅酸盐玻璃仍保持稳定。在800 kGy时，样品表面析出由Na和O组成的颗粒。表面附近的Na和B在γ射线照射下明显减少。结果表明，在一定的累积剂量下，γ辐照对玻璃玻璃化的影响是明显的。γ射线辐照下玻璃结构和元素分布的变化也与玻璃成分有关。

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来源期刊

International Journal of Applied Glass Science MATERIALS SCIENCE, CERAMICS-

CiteScore

4.50

自引率

9.50%

发文量

审稿时长

>12 weeks

期刊介绍： The International Journal of Applied Glass Science (IJAGS) endeavors to be an indispensable source of information dealing with the application of glass science and engineering across the entire materials spectrum. Through the solicitation, editing, and publishing of cutting-edge peer-reviewed papers, IJAGS will be a highly respected and enduring chronicle of major advances in applied glass science throughout this century. It will be of critical value to the work of scientists, engineers, educators, students, and organizations involved in the research, manufacture and utilization of the material glass. Guided by an International Advisory Board, IJAGS will focus on topical issue themes that broadly encompass the advanced description, application, modeling, manufacture, and experimental investigation of glass.