NMR study of a gel layer formed on an irradiated Na-aluminoborosilicate glass during aqueous alteration DOI Creative Commons
Sathya Narayanasamy, Thibault Charpentier, Amreen Jan

et al.

npj Materials Degradation, Journal Year: 2025, Volume and Issue: 9(1)

Published: Jan. 15, 2025

Simplified borosilicate glass powders were irradiated by 952 MeV 136Xe ions and then altered in a solution at high S/V ratio pH 9 90 °C for 33 days. Compared to the alteration of non-irradiated sample, sample 3–5 times more. Overall, both gels had similar structure as indicated 29Si, 27Al, 23Na, 17O NMR experiments. Nevertheless, according 11B 1H experiments, differences observed quantity speciation B retained gels. The results suggest that mechanisms responsible passivation are not changed because irradiation-induced structural damages. However, kinetics, gel morphology related porosity, degree maturation different. It seems formed on matures faster retains B, which turn influences dissolution rate.

Language: Английский

NMR study of a gel layer formed on an irradiated Na-aluminoborosilicate glass during aqueous alteration DOI Creative Commons
Sathya Narayanasamy, Thibault Charpentier, Amreen Jan

et al.

npj Materials Degradation, Journal Year: 2025, Volume and Issue: 9(1)

Published: Jan. 15, 2025

Simplified borosilicate glass powders were irradiated by 952 MeV 136Xe ions and then altered in a solution at high S/V ratio pH 9 90 °C for 33 days. Compared to the alteration of non-irradiated sample, sample 3–5 times more. Overall, both gels had similar structure as indicated 29Si, 27Al, 23Na, 17O NMR experiments. Nevertheless, according 11B 1H experiments, differences observed quantity speciation B retained gels. The results suggest that mechanisms responsible passivation are not changed because irradiation-induced structural damages. However, kinetics, gel morphology related porosity, degree maturation different. It seems formed on matures faster retains B, which turn influences dissolution rate.

Language: Английский

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