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Meeting 2017 TMS Annual Meeting & Exhibition
Symposium High Temperature Electrochemistry III
Presentation Title Thermal Imaging Furnace Technique for Ultra-high Temperature Electrochemical Measurements
Author(s) Bradley R Nakanishi, Erick I. Hernandez, Antoine Allanore
On-Site Speaker (Planned) Bradley R Nakanishi
Abstract Scope Refractory oxides are essential to applications ranging from lasers to aerospace. In particular, their properties at high temperature are of importance, including in the molten state. Demonstrating that these melts are amenable to direct electrochemical probing remains a frontier. If available, such an approach would allow direct access to the constituents' thermodynamic and transport properties. Herein we report a novel technique coupling alternating current electrochemical measurements with a thermal imaging furnace using Al<SUB>2</SUB>O<SUB>3</SUB>, La<SUB>2</SUB>O<SUB>3</SUB> and Y<SUB>2</SUB>O<SUB>3</SUB> components. This containerless approach provides access to ultra-high temperatures in excess of 2000K and continuous visual observation of the melt and electrodes during measurements. Furthermore, we have observed for the first time the electrolytic decomposition of these melts using this approach, and established a viable pathway towards thermodynamic property measurements. These findings are foreseen to accelerate the pace of discovery of novel, oxide solvents for reactive metal recovery, e.g. aluminum or rare earth elements.
Proceedings Inclusion? Planned: Supplemental Proceedings volume


Effects of Oxide Precursor Preparation Parameters on the Electrochemical Reduction of Tantalum Pentoxide in Calcium Chloride Melt
Electrochemical and Thermodynamic Properties of Gadolinium Chloride in LiCl-KCl Eutectic Salt
Electrochemical Behavior of Sn/SnCl2 Cathode in Na | NaCl-AlCl3-SnCl2 | Sn Cell
Electrochemical Deposition of Barium into Liquid Bismuth from BaCl2-LiCl-CaCl2-NaCl Electrolyte
Electrochemical Synthesis of TaC in Molten Salt
Electrochemical Techniques for Nuclear Safeguards in Molten Salt
Electrochemistry in Molten 2LiF-BeF2 Salt for the Fluoride Salt-Cooled High Temperature Reactor Applications
Impurity Removal from Titanium Oxycarbide
Initial Operation of Kg-Scale Electrolytic Reduction and Salt Distillation Equipment for the Pyroprocessing of Uranium Oxide in a Hot Cell
Molten Flux Design for Solid Oxide Membrane Based Electrolysis of Si from Silica
Optimized Voltammetry Methods for Measuring Concentration of Multiple Rare Earths and Actinides in Molten LiCl-KCl
Thermal Imaging Furnace Technique for Ultra-high Temperature Electrochemical Measurements
Thermochemical Properties of Barium-Bismuth Alloys Determined by Emf Measurements
Thorium and Uranium Electrodeposition from Molten LiCl-KCl onto Alpha Spectroscopy Semiconductor Detector Surface
Zirconium Management in the Mk-IV Electrorefiner

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