|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Characterization of Minerals, Metals, and Materials
||High Accuracy Technique to Measure the Electrical Conductivity of Highly Conductive Molten Salts
||Thomas Villalon, Shizhao Su, Uday Pal
|On-Site Speaker (Planned)
Using a co-axial electrode setup and a standard-free technique, the electrical conductivity of highly conductive molten salts (>1S/cm) at high temperatures (in excess of 1000°C) was measured. Various electrode materials have been investigated to achieve low electrical resistance that is required to obtain high accuracy measurements. One version of the setup was made of two concentric steel cylindrical electrodes, molybdenum rods, and a boron nitride cap to ensure the electrodes’ concentricity. Electrochemical impedance spectroscopy (EIS) was used to measure the electrical resistance as a function of immersion depth of the electrodes in the molten salt. The inverse of the resistance was plotted as a function of immersion depth in order to determine the conductivity. LiF and cryolite were used to validate the accuracy of the method. Using the aforementioned materials, it was determined that the method is sufficiently accurate to measure molten salts that have conductivity less than 2.5 S/cm.
||Planned: A print-only volume