|About this Abstract
||2021 TMS Annual Meeting & Exhibition
||Thermal Property Characterization, Modeling, and Theory in Extreme Environments
||Measurement of density, thermal expansion, and viscosity of volatile molten salts using X-ray radiography
||Ryan Gallagher, Paul Rose, Alex Martin, N. Dianne Ezell
|On-Site Speaker (Planned)
Molten salt reactor (MSR) concepts utilizing molten salts as the coolant (salt-cooled) or fuel carrier (salt-fueled) are currently under development by several U.S. institutions and companies. In Salt-fueled reactors, fissile or fertile elements are dissolved into the molten salt. Accurate data of density, expansion, and viscosity are critical for reactor modeling and design. Yet, existing property data for fuel bearing salts are relatively scarce. Due to the volatility of fuel-bearing molten salts, the fluids must be contained in a sealed containment, which excludes commonly used methods such as the Archimedes method and the rotating spindle viscometer. A system integrating a portable x-ray generator and digital flat panel detector with a high temperature furnace has been developed and demonstrated on non-actinide bearing molten salts using dilatometry to measure density and expansion, and a falling-ball technique to measure viscosity. The experiment design, operating principle, and preliminary results will be discussed.
||Nuclear Materials, Characterization, High-Temperature Materials