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Meeting 2027 TMS Annual Meeting & Exhibition
Symposium Materials and Chemistry for Molten Salt Systems
Presentation Title Influence of Salt Chemistry on Tritium Transport and Release in a Molten Salt Breeder System
Author(s) Huihua Yang, Nikola Goles, James Dark, Weiyue Zhou, Kevin Woller, Ethan Peterson, Remi Delaporte-Mathurin
On-Site Speaker (Planned) Huihua Yang
Abstract Scope Salt chemistry can strongly influence hydrogen isotope behavior in molten salt systems through isotopic exchange, surface reactions, and gas-surface interactions. In this work, a multiphysics tritium transport framework is developed in FESTIM to investigate the influence of chemical environment on tritium transport and release in a molten salt breeder system. The model incorporates tritium generation, transport in molten salt and structural materials, salt-metal partitioning, isotopic exchange, and surface recombination under different sweep and sparging gas conditions. The framework is validated against tritium release measurements from the BABY molten salt breeding experiment at MIT PSFC under helium and hydrogen-containing gas environments. The results demonstrate that gas chemistry significantly alters tritium transport, release behavior, and inventories. The validated model provides insight into transport pathways and tritium inventories that cannot be directly inferred from release measurements alone, demonstrating the importance of chemical environment effects in predictive models for future breeder salt systems.
Proceedings Inclusion? Planned:
Keywords Modeling and Simulation, Nuclear Materials, High-Temperature Materials

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

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A Low Temperature Solution based Chemical process for Immobilization of Fluoride Salt Waste into Metal Halide Perovskite Structures
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Advancing Molten Salt Thermal Property Models via ML-Predicted Structural Features of the Pair Distribution Function
Aluminum Complex Ions and Cathodic Process in AlCl3-NaCl-LiCl Molten Salt System at 120-150 °C
Assessment of Sr Quantification in Molten NaCl–KCl Containing Multiple Fission-Product Elements Using Laser-Induced Breakdown Spectroscopy
Atomistic Insight into Chromium Speciation, Transport, and Oxide Interactions in Molten Eutectic NaCl-MgCl2 Salt
Atomistic Understanding of Fluoroacidity-Dependent Cr Corrosion in Molten Fluorides from ab initio Molecular Dynamics and Metadynamics
Beyond Kirkendall Voids: Grain Boundary Assisted Bulk Dealloying in Molten Fluoride Salt
Challenges and Opportunities in Molten Salt Electrochemistry: Electrode Materials, Salt Chemistry, and Actinide Measurements
Computational Investigations of Evolution at Metal-Molten Salt Interfaces
Corrosion compatibility of candidate structural alloys in static molten FLiBe relevant for fusion reactors
Corrosion Study of Zirconium Metal as a Redox Buffer Agent in Molten Fluoride Salts Using in situ and Theoretical Raman Spectra
Coupled Effects of Potential, Microstructure, Temperature, Composition, and Irradiation on Molten Fluoride Salt Corrosion of Ni-Cr Alloys
Crystallographic Effects on Grain-Boundary-Mediated Corrosion in Ni–Cr Alloys Exposed to Oxidizing FLiNaK
Dealloying-driven surface pattern formation during molten salt corrosion
Decoding the Pair Distribution Function of Molten Uranium Chloride from X Ray Absorption Spectra by Machine Learning
Development of Tools and Techniques for Modern Molten FLiBe Thermal Convection Loops
Effect of Aluminum Content on Passive Film Characteristics and Corrosion Behavior of Ti–xAl Alloys
Effect of Temperature on Molten Chloride Corrosion of High-Entropy Alloys: A Machine Learning Analysis of High-Throughput Experimental Data
Electrochemical Characterization of Uranium in Molten MgCl2-NaCl Using a Novel Magnesium Reference Electrode
Electrochemical Investigation of Sulphide Ion in Molten Nacl-Mgcl2 for Msrs
Electrochemical Investigation of Temperature-Dependent Boron Volatilization in Molten Chloride Salt
Electrochemical Investigations of Molten Chloride Corrosion at the Material–Salt Interface
Electrochemical Measurements of Dissolved Impurities in Molten Salts using FT-ACV
Electrochemical monitoring of molten salt chemistry
Electrochemical reduction of iron oxides in molten LiCl–Li2O at 650 °C
Electrochemical Stability of SnO2 Oxygen-Evolving Anode in Molten LiCl-Li2O at 650 °C
Engineering Corrosion Resistance of Constituent-Phases in Ni-W Alloys against Molten Chlorides
Evaluation of the Mn/MnCl2 Redox Buffer for Molten Chloride Salts
First-Principles Modeling of Uranium Chloride Melts
Fission Product-Induced Structural Perturbations in FLiBe and UCl₃-Based Fuel Salts
High-Throughput CALPHAD Screening of Multicomponent Molten Salt Phase Change Materials Using ChemApp for Python
High-vacuum corrosion testing of stainless-steel coupons in molten FLiNaK at elevated temperatures
HybriMet NiWC3b for demonstrated corrosion, wear, and erosion resistance in 750C salt.
ICP-MS Round Robin Study for Quantifying Impurities in FLiBe Salt
Impact of exposure time and temperature on stress corrosion cracking behavior of Hastelloy-N in molten fluoride salt
Improved measurements of the thermal conductivity of molten halide salts
Improved Predictions of Thermal Transport in Molten Salts based on Machine Learning Interatomic Potentials (MLIPs)
In-Situ XAS/XRF and Atomistic Modeling of Lanthanide Redox Buffering and Ni-20Cr Corrosion in Molten Chloride Salts: Coupling to Halobasicity
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Influence of Salt Chemistry on Tritium Transport and Release in a Molten Salt Breeder System
Integrated Assessment of Impurity Driven Corrosion and Stress-Corrosion Cracking in Molten Salt Reactor Environments
Investigating the Effects of Cationic Impurities in FLiNaK Salts on the Corrosion of Iron-Based Alloys for Molten Salt Reactors
Investigation Into the Performance of Ruthenium Alloy as a Potential Anode for Oxide reduction in Molten LiCl-Li2O
Investigation of Alloy Corrosion in Molten Salts Through Phase-Field Modeling of Electroanalytical Experiments
Invited: Computational Investigation of Fluoride-Based Molten Salts for Advanced Energy Applications
Isothermal Flow-Assisted Corrosion of LiCl-KCl Molten Salt
Lewis Acid–Base Behavior of Molten Salts, Bulk and Interfacial Melt Structure, and the Behavior of Radiation‑Produced Species
LIBS-Based Depth Profiling for Rapid Evaluation of Chromiun Depletion
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Mechanistic insights into direct electrochemical extraction of manganese from carbonate-derived MnO via vacancy assisted deoxygenation in molten salts
Microstructural Degradation study of Ni20Cr and Hastelloy N in CsI-Bearing LiCl-KCl Molten Salt using electron microscopy
Modelling the Use of Li as a Reducing Agent to Mitigate Alloy Corrosion in Molten FLiNaK Environments
Modular Design of a High-Temperature Flexural Fatigue Fixture for Characterizing Stress Assisted Corrosion Behavior of Stainless Steel 316H in a Molten NaCl-MgCL2 Salt
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Molten salt corrosion of nickel super alloys and high-carbon stainless steel alloys
Molten Salt Electrodeposition with Galvanic Replacement (MSEGR) for Intra-Rare Earth Selective Enrichment in Molten Chloride Salts
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Morphologies of dealloying corrosion attack at grain boundaries: 1D wormholes, 2D planes, and 3D structures
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Phase-Field Modeling of Cr and Fe Depletion in Ni-Cr-Fe Alloys Exposed to Molten NaCl-KCl
Physics Properties of AlCl3-NaCl-LiCl Molten Salts System
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Predictive Modeling and Experimental Validation of Irradiation-Accelerated Molten-Salt Corrosion in Conventional and Additively Manufactured 316 Stainless Steels
Preliminary Thermodynamic Modeling of Oxide Solubility in Fluoride Salt Coolant or Fuel for MSRs
Protective Coatings and the Impact of Imperfections for Molten Halide Salt Applications
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Redox-Driven Transition from Selective Dissolution to Penetrating Corrosion in Molten FLiBe
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Salt-Metal Interfacial Chemistry Governing Early-Stage Corrosion in Fe-Cr Alloys
Structure-Informed Electrochemistry: Building Reliable Measurements for Predictive Molten Salt Chemistry
Temperature-Dependent Transition from Intergranular Attack to Bicontinuous Structure Formation in Molten Salts and Liquid Metal Dealloying
The chemistry and thermophysical properties of chloride molten salts in the presence of Ti and Zr
The Effect of Temperature on the Preparation of Nb-Si Alloys by Molten Salt Electrolysis and Thermodynamic Analysis
The molten salt reactor program in support of safe development and deployment of MSRs
Thermochemical Aspects of Molten Salt Corrosion in MSRs and Limiting Behavior
Thermodynamic Assessment of Phase Evolution, Slag–Metal Separation, and Alumina Interaction during Smelting Separation of Molten-Salt-Electrolysis Products
Thermodynamic investigation of the CrCl2-CrCl3-UCl3 and CrF2-CrF3-UF4 systems to elucidate corrosion mechanisms in molten salt reactors
Thermodynamic modeling of samarium fission products in FLiNaK (LiF–NaF–KF)
Thermodynamic Modeling of the LiF-NaF-ZrF4 System for Decladding Spent Nuclear Fuels
Thermodynamic Properties of Oxide Ions in LiCl-based Molten Salts via Emf Measurements
Thermodynamics of Melting-induced Hydration in Molten Salts
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