journal article·2018-04

Kinetic study and structural evolution of SON68 nuclear waste glass altered from 35 to 125 °C under unsaturated H2O and D2O18 vapour conditions

Rachid Bouakkaz, Abdesselam Abdelouas, Bernd Grambow

Corrosion Science· Volume 134
Publisher page

Abstract

Abstract The French reference SON68 nuclear waste glass corrosion under H2O and D2O18 atmosphere was investigated at 35−125 °C and different relative humidities (92–99.9%). The hydration kinetic was followed by FTIR and solid characterization was achieved using SEM/EDX, Raman and TOF-SIMS. The water diffusion coefficients in the glass ranged from 8.7 × 10−22 to 5.3 × 10−19 m2 s−1. The alteration products were calcite, apatite, powellite and tobermorite. Pre-hydrated glass alteration in synthetic groundwater at 50 °C showed an instantaneous release of elements from the surface, making it important to evaluate well the vapour hydration period of the glass.
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Research context

OpenAlex topics: Glass properties and applications · Nuclear materials and radiation effects · Recycling and utilization of industrial and municipal waste in materials production

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