A5010031584- Molten salt chemistry and electrochemical processes
- Nuclear Materials and Properties
- Fusion materials and technologies
- Metallurgical Processes and Thermodynamics
- Advanced ceramic materials synthesis
- Graphite, nuclear technology, radiation studies
- Phase Change Materials Research
- Advancements in Battery Materials
- Nuclear reactor physics and engineering
- Catalytic Processes in Materials Science
- Radioactive element chemistry and processing
- High-Temperature Coating Behaviors
- Solar Thermal and Photovoltaic Systems
- High Temperature Alloys and Creep
- Chemical Synthesis and Characterization
- MXene and MAX Phase Materials
- Hydrogen embrittlement and corrosion behaviors in metals
- Advanced Battery Materials and Technologies
- Muon and positron interactions and applications
- Material Properties and Applications
- Cardiac Valve Diseases and Treatments
- Cardiac and Coronary Surgery Techniques
- Thermal properties of materials
- Heat Transfer and Optimization
- Nuclear and radioactivity studies
Savannah River National Laboratory
2014-2024
Yale University
2023
Westinghouse Electric (United States)
2021-2023
Thomas Jefferson University
2023
Presbyterian Hospital
2018
New York Hospital Queens
2018
NewYork–Presbyterian Hospital
2018
Cornell University
2018
Weill Cornell Medicine
2018
University of Wisconsin–Madison
2008-2011
Silicon carbide (SiC)-based nuclear fission fuel rod cladding has been considered as one of the possible designs for accident tolerant fuels. It is in form a SiC fibre reinforced matrix composite tube (SiCf-SiCm) with monolithic outer and/or inner coating layers. This study focuses on deformation and fracture processes this material using situ X-ray micro-computed tomography (XCT) at room temperature (RT) 1200 °C an inert gas environment C-ring compression loading configuration. Prior to...
Six Ni and Fe–Ni based austenitic alloys were exposed to molten LiF–NaF–KF: 46.5–11.5–42mol% salt, commonly referred as FLiNaK, at 850°C for 500 h. Corrosion was noted occur predominantly from dealloying of Cr resulting in void formation, an effect that particularly pronounced the grain boundaries. Alloy weight-loss due fluoride salt corrosion correlated with initial Cr-content up a content about 20wt%, consistent Cr-concentrations measured salts after tests. However, nominally 20 wt% 23...
The effects of crucible material choice on alloy corrosion rates in immersion tests molten LiF–NaF–KF (46.5–11.5-42 mol. %) salt held at 850 °C for 500 hrs are described. Four materials were studied. Molten exposures Incoloy-800H graphite, Ni, Incoloy-800H, and pyrolytic boron nitride (PyBN) crucibles all led to weight-loss the coupons. Alloy weight loss was ∼30 times higher graphite Ni comparison PyBN crucibles. It is hypothesized galvanic coupling between coupons contributed rates. had...
In high operating temperature concentrated solar power (CSP) systems, the use of molten salt heat transfer fluids causes corrosion alloys in receivers and exchangers that decreases both hea...
Cathodic protection is one way to mitigate corrosion of metal surfaces concentrated solar power (CSP) systems, by shifting the potential alloy below its open circuit (OCP). The behavior molten salt CSP systems under cathodic can be obtained developing a three-dimensional (3-D) computational model. A model was designed for and benchmarked against thermosiphon reactor. For case, magnesium (Mg) added as sacrificial anodic species, which reduces rate polarization corroding surface. then...
One challenge with concentrated solar power (CSP) systems is the potential corrosion of alloys in receivers and heat exchangers at high-temperature (700–1000°C), which leads to a reduction transfer efficiency influences durability. In this work, model has been developed predict rates mechanisms for nickel-based alloy that contact molten salt system. addition accounting mass effects on corrosion, takes into account electrochemical kinetics. Coupled computational fluid dynamics (CFD), local...
An in situ electrochemical probe, utilising anodic stripping voltammetry (ASV), has been developed to measure dissolved Cr concentration the molten salt LiF–KF–NaF (46·5–11·5–42 mol.-%), commonly referred as FLiNaK. Tests were performed a glassy carbon crucible an argon atmosphere glovebox at temperature of 650°C. Cyclic was determine reversibility and mid peak potential. The Cr2+/Cr0 reaction occurred with potential −0·51 V versus 10 mol.-% Ni2+/Ni0 reference electrode. integrated current...
Novel plate-type heat exchangers (HXs) with high-power densities are proposed based on novel integrated flow channel designs. Net-shape plates were achieved by the molding of powder mixtures to wood-based composites (WBC's). HX stacks built plate-to-plate joining followed pyrolysis and silicon melt infiltration. The C/SiSiC provided PyC–SiC coating was gas-tight helium up 5.5 MPa. Corrosion tests coupons performed using a ternary eutectic fluoride salt (FLiNaK) as intermediate transfer...
Concentrated solar power (CSP) systems in the presence of high operating temperature heat transfer fluids for production processes has attracted more attention recent years. The challenge with these is corrosion alloys at high-temperature (700-1000°C) receivers and exchangers causing a reduction efficiency influencing apparent durability [1-3]. In this work, model that includes thermal gradients fluid flow developed to predict rates mechanisms observed nickel base alloy contact molten salt...
Savannah River National Laboratory (SRNL) is exploring a concept of pairing LiF-BeF2 (FLiBe) immersed Permeation Against Vacuum (PAV) tritium extraction system with sacrificial anode. Several fusion concepts utilize FLiBe for breeding, and breeding would occur from neutron interactions the Li component, creating corrosive TF and/or T2. In absence redox buffered system, be able to attack containment materials until neutralized. One way neutralize contact it an active metal such as Be or which...