Effects of Al:Si and (Al+Na):Si Ratios on the Static Corrosion of Sodium-Boroaluminosilicate Glasses - Archive ouverte HAL Access content directly
Journal Articles International Journal of Applied Glass Science Year : 2022

Effects of Al:Si and (Al+Na):Si Ratios on the Static Corrosion of Sodium-Boroaluminosilicate Glasses

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1
Joelle Reiser
  • Function : Author
Benjamin Parruzot
  • Function : Author
Jeffrey Bonnett
  • Function : Author
Courtney Smoljan
  • Function : Author
Lorraine Seymour
  • Function : Author
Joseph Ryan
John Vienna
  • Function : Author

Abstract

Understanding alteration mechanisms of borosilicate glasses in aqueous media is essential to nuclear waste performance assessments to ensure radioisotopes are contained for extended durations. Aluminum is typically added to glass compositions to reduce the extent of alteration. However, previous work on 7-day durability tests has suggested that Al has a non-linear relationship with extent of alteration. The effects of Al:Si and (Al+Na):Si substitutions on glass durability were evaluated using series of glasses based on the International Simple Glass corroded in static conditions up to 13 months in deionized water at 90 °C. The alteration behavior was determined by measurement of element release in solution. The ⁓7-day alteration trends across the series were consistent with predicted trends. The 13 month results indicated overall alteration decreased as Al:Si ratios increased and was unaffected by changes in (Al+Na):Si except for the glass with the highest (Al+Na):Si ratio (ISG-A23N), which completely altered within 14 days. Frequent sampling and in-situ Raman measurements revealed ISG-A23N experienced several distinguishable alteration rate regimes within 7 days, forming a ⁓100 µm alteration layer and a NaSiAlO4 zeolite.
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Dates and versions

cea-03579049 , version 1 (17-02-2022)

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Joelle Reiser, Benjamin Parruzot, Stephane Gin, Jeffrey Bonnett, Courtney Smoljan, et al.. Effects of Al:Si and (Al+Na):Si Ratios on the Static Corrosion of Sodium-Boroaluminosilicate Glasses. International Journal of Applied Glass Science, 2022, pp.2041. ⟨10.1111/ijag.16109⟩. ⟨cea-03579049⟩
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