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Meeting MS&T23: Materials Science & Technology
Symposium Progressive Solutions to Improve Corrosion Resistance of Nuclear Waste Storage Materials
Presentation Title Topological Model of the Dissolution Kinetics of Borosilicate Glasses
Author(s) Mathieu Bauchy
On-Site Speaker (Planned) Mathieu Bauchy
Abstract Scope Understanding and predicting the dissolution kinetics of borosilicate glasses is of primary importance for nuclear waste immobilization applications. However, our ability to predict the kinetics of dissolution is limited by (i) the lack of knowledge regarding the rate-limiting mechanism of glass corrosion, (ii) uncertainties regarding the atomic structure of oxide glasses, (iii) the large number of intrinsic (e.g., glass composition) and extrinsic (e.g., solution chemistry, pH, temperature, etc.) features at play, and (iv) the vast compositional envelope accessible to borosilicate glasses. Here, based on vertical scanning interferometry (VSI), we study the stage I dissolution of borosilicate glasses under several values of pH. We demonstrate that the kinetics of the dissolution is controlled by the topology of the atomic network. We propose a topological model of dissolution, which is shown to offer realistic predictions of the activation energy of dissolution for a wide selection range of silicate glasses and crystals.


An Integrated Data-driven and Physics-driven Approach Towards Discovering Optimal Nuclear Waste Immobilization Glass
Chloride-induced Stress Corrosion Crack in Spent Nuclear Fuel Canisters: Understanding and Mitigating
Evaluating the Sensitivities of an Environmental Cracking LEFM-based Model for Use in Realistic Lifetime Predictions of Nuclear Waste Storage Casks
Gel Layer Structures and Properties of Silicate Glasses: Understanding the Corrosion of Glasses for Nuclear Waste Disposal
SiON Protective Coatings for U-shaped Stainless Steel
Structural Descriptors Controlling Sulfur Solubility in Borosilicate Glasses
Topological Model of the Dissolution Kinetics of Borosilicate Glasses

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