Elemental behaviors in NBS glass under subsequential γ-irradiation and corrosion

IF 2.5 3区材料科学 Q2 MATERIALS SCIENCE, CERAMICS

International Journal of Applied Glass Science Pub Date : 2025-02-24 DOI:10.1111/ijag.16701

Jiandong Zhang, Xianglong Wang, Xiaoyu Xia, Fanrong Zeng, Yongsheng Ling, Qing Shan, Wenbao Jia

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Abstract

Borosilicate glass is a promising material for the immobilization of high-level radioactive waste, and its irradiation stability is a critical factor influencing the leakage of radionuclides into the biosphere. This study investigates the impact of γ-ray irradiation on three-oxide sodium borosilicate glasses (NBS) at doses of 8 and 800 kGy at room temperature. Elemental depth profiles and leaching behavior are evaluated using TOF-SIMS and ICP-OES. The results reveal that the effect of γ-irradiation on corrosion would soon recover after 1 day. Over longer periods, the corrosion behaviors of both pristine and irradiated samples become similar. Additionally, 800 kGy γ-irradiation leads to a 30% increase in Na and B leaching in NBS9 in 16 days, along with enhanced initial leaching rates. However, despite these changes, the residual leaching rate of NBS9 remains constant, suggesting that increased corrosion may also promote the formation of passivating layers. It is concluded that although irradiation can alter glass properties, the impact of γ-irradiation on long-term leaching rates may be neglected during the corrosion processes.

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NBS玻璃在γ辐照和腐蚀下的元素行为

硼硅玻璃是一种很有前途的高放废物固定化材料，其辐照稳定性是影响放射性核素向生物圈泄漏的关键因素。研究了室温下γ射线辐照对三氧化硼硅酸钠玻璃（NBS）的影响，辐照剂量分别为8kgy和800kgy。利用TOF-SIMS和ICP-OES对元素深度剖面和浸出行为进行了评价。结果表明，γ辐射对腐蚀的影响在1天后很快恢复。经过较长的时间，原始样品和辐照样品的腐蚀行为变得相似。此外，800 kGy γ辐照导致NBS9在16天内Na和B浸出量增加30%，同时初始浸出率提高。然而，尽管有这些变化，NBS9的残余浸出率保持不变，这表明腐蚀的增加也可能促进钝化层的形成。综上所述，虽然辐照可以改变玻璃的性能，但在腐蚀过程中，γ辐照对长期浸出率的影响可以忽略不计。

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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.