Gamma irradiation-induced effects in sodium diborate glasses doped with some transition metals

Kutub, A. A.; Elmanharawy, M. S.

doi:10.1007/bf01184999

Cited by 6 publications

(2 citation statements)

References 15 publications

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“…For the unirradiated one, the specimen shows a transparent appearance. Meanwhile, the NBS9 glass turns to a gray color after 8 kGy and 800 kGy γ irradiations, indicating the formation of color centers 24 . Moreover, a foggy surface starts to appear on the 800 kGy specimen, but not appear on the 8 kGy ones.…”

Section: Resultsmentioning

confidence: 97%

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

Zhang

Xia

Zeng

et al. 2023

Int J of Appl Glass Sci

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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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Section: Resultsmentioning

confidence: 97%

“…Meanwhile, the NBS9 glass turns to a gray color after 8 kGy and 800 kGy γ irradiations, indicating the formation of color centers. 24 Moreover, a foggy surface starts to appear on the 800 kGy specimen, but not appear on the 8 kGy ones. As a comparison, NBS10 also shows the foggy surface at the dose of 800 kGy.…”

Section: Resultsmentioning

confidence: 99%

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

Zhang

Xia

Zeng

et al. 2023

Int J of Appl Glass Sci

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Electrical, IR spectroscopy, and DTA studies of some sodium tetraborate glasses containing vanadium oxide

Ewiss

Mansoor

1996

Phys. Stat. Sol. (a)

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The ac electrical conductivity and dielectric constant of semiconductive (Na2B4O7)100‐x(V2O5)x glasses with x = 0.25, 0.5, 1, 2, 3, and 5 mol% have been measured at a constant frequency of 1 kHz in the temperature range from 293 to 600 K. IR spectra of these samples have been recorded at room temperature in the range between 400 and 4000 cm−1. The results showed a broad absorption band with a peak around 3400 cm−1, indicating the presence of a hydroxyl group and the formation of B‐OH within the glass matrix. The addition of V2O5 caused new absorption bands in comparison with the absorption bands obtained for the pure Na2B4O7 glass between 500 and 1800 cm−1. The differential thermal analysis (DTA) was performed for all samples in the temperature range from room temperature to 600 °C.

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