Chemical durability of alkali-borosilicate glasses studied by analytical SEM, IBA, isotopic-tracing and SIMS

Trocellier, P.; Djanarthany, S.; Chêne, J.; Haddi, A.; Brass, A.M.; Poissonnet, S.; Farges, François

doi:10.1016/j.nimb.2005.06.196

Cited by 19 publications

(5 citation statements)

References 10 publications

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“…The steady‐state corrosion of glasses requires the dissolution of the silicate matrix . A glass which contains tetrahedra that are fully corner‐sharing Q4 might be expected to be more corrosion resistant.…”

Section: Resultsmentioning

confidence: 99%

“…The steady-state corrosion of glasses requires the dissolution of the silicate matrix. 27 A glass which contains tetra hedra that are fully corner-sharing Q4 might be expected to be more corrosion resistant. Corrosion resistance is, however, not solely dependent on the local environment of the network formers, but also depends on effects occurring in the intermediate-range structure, where the formation of alkali clusters or channels play an important role.…”

Section: Resultsmentioning

confidence: 99%

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Predicted Mechanism for Enhanced Durability of Zinc Containing Silicate Glasses

2013

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Experimental studies have reported that zinc oxide improves the durability of glasses used for nuclear waste immobilization. Here, molecular dynamics simulations are used to predict the atomic structures of sodium silicate glass with and without zinc. A simulated melt-quench procedure is used to generate glass structures. Pair distribution functions, ring size distributions, and alkali clustering are then examined. This allows insights into the structural role of zinc oxide within the glass and helps distinguish between its reported functions as a network former and a network modifier. Changes in the sodium ion distribution and clustering behavior within the glass are observed, due to zinc oxide addition. This affects the local and intermediate-range structure of the glass and provides a possible explanation for enhanced durability.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Predicted Mechanism for Enhanced Durability of Zinc Containing Silicate Glasses

2013

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“…The characterization of glass samples after leaching is essentially based on the coupling of scanning electron microscopy (SEM) and electron microprobe analysis with Rutherford backscattering spectrometry (RBS), elastic recoil spectrometry (ERDA) and X-ray induced emission (HeIXE) in order to compare the evolution of the chemical composition of the near surface region of glasses. The experimental configuration has been detailed elsewhere [4][5][6]. Leachates have been analysed using inductively coupled plasma atomic emission spectroscopy (ICP-AES).…”

Section: Methodsmentioning

confidence: 99%

Ion irradiation behaviour and chemical durability of simple borosilicate glasses

Haddi¹,

Trocellier

Draganić³

et al. 2008

Nuclear Instruments and Methods in Physics Research Section B:

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“…3). The release of free ions from the glass matrices could be attributed to the following reactions [15,[30][31][32]:…”

Section: Leachant Speciation For Abs-waste 17mentioning

confidence: 99%

Evolution of cations speciation during the initial leaching stage of alkali-borosilicate-glasses

2020

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Alkali-borosilicate glasses (ABS) are used as host immobilization matrices for different radioactive waste streams and are characterized by their ability to incorporate a wide variety of metal oxides with respectively high waste loadings. The vitreous wasteform is also characterized by very good physical and chemical durability. The durability of three ABS compositions were analyzed by investigating their leaching behavior using the MCC1 test protocol and these data were used to investigate the waste components retention in the altered layer and the evolution of the interfacial water composition during the test. The results indicated that the Mg species evolution is exceptional with respect to other alkaline elements and dependent on glass matrix composition and leaching progress, while transition elements speciation is fairly constant throughout leaching process and independent on glass compositions. Si and B species are changing during leaching process and are affected by waste composition. For modified wasteform sample, evolution of Mg, Si and B species is respectively constant, whereas at highest waste loading, these elements have fairly constant speciation evolution within the first 2 weeks of leaching.

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Chemical durability of alkali-borosilicate glasses studied by analytical SEM, IBA, isotopic-tracing and SIMS

Cited by 19 publications

References 10 publications

Predicted Mechanism for Enhanced Durability of Zinc Containing Silicate Glasses

Predicted Mechanism for Enhanced Durability of Zinc Containing Silicate Glasses

Ion irradiation behaviour and chemical durability of simple borosilicate glasses

Evolution of cations speciation during the initial leaching stage of alkali-borosilicate-glasses

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