ProgramMaster Logo
Conference Tools for 2021 TMS Annual Meeting & Exhibition
Register as a New User
Submit An Abstract
Propose A Symposium
Presenter/Author Tools
Organizer/Editor Tools
About this Abstract
Meeting 2021 TMS Annual Meeting & Exhibition
Symposium Materials Processing Fundamentals
Presentation Title Thermodynamic Examination of Quaternary Compounds in the Ag–Fe–(Ge, Sn)–Se Systems by the Solid-state EMF Method
Author(s) Mykola Moroz, Fiseha Tesfaye, Pavlo Demchenko, Myroslava Prokhorenko, Bohdan Rudyk, Lyudmyla Soliak, Daniel Lindberg, Oleksandr Reshetnyak, Leena Hupa
On-Site Speaker (Planned) Fiseha Tesfaye
Abstract Scope The equilibrium phase space of the Ag–Fe–X–Se (X: Ge, Sn) systems in the parts Ag8XSe6–XSe–FeSe2–AgFeSe2–Ag8XSe6 consists of four quaternary-phase regions formed with the participation of low-temperature modifications of the Ag2FeGeSe4 and Ag2FeSnSe4 compounds. The kinetic barriers of the formation of equilibrium four-phase regions that are observed under conditions of vacuum ampoule synthesis below 600 K were overcome by synthesis of phases at the positive electrodes of electrochemical cells (ECCs): (−)C|Ag|SE|R(Ag+)|PE|C(+), where C is graphite, Ag is left (negative) electrode, SE is the solid-state electrolyte, PE is the right (positive) electrode, and R(Ag+) is the region of Ag+ diffusion into PE. Silver cations Ag+ that shifted from the left to the right electrode of ECCs acted as the seed centers of an equilibrium set of phases. Based on the temperature dependences of the EMF of the cells in the temperature range 430–485 K, the standard thermodynamic functions of the Ag2FeGeSe4 and Ag2FeSnSe4 compounds were calculated for the first time. The observed experimental results and thermodynamic calculations are in good agreement.
Proceedings Inclusion? Planned:


Carbothermal Reduction of Brazilian Linz Donawitz-LD Steel Sludges
Computational Fluid Dynamics Modeling of Damped Oscillations of Molten Metal Droplets
Contactless Inductive Flow Tomography for Control of Liquid Metal Flow with Electromagnetic Actuators
Containerless Materials Processing for Materials Science on Earth and in Space
Cylindrical and Planar Magnetron Sputtering for Microstructural Control
Effect of Dissolution of Titanium Ions on Ti Alloys Electrodeposition from EMIC-AlCl3 Ionic Liquid at Low Temperature
Effect of Nitrogen on Weldability and the Microstructure in Laser Beam Welding of Duplex Stainless Steel
Effect of Slag Conductivity on Decarburisation Reaction Kinetics
Experimental Characterization of Liquid Metal Bubble-driven Flows Modeling the Situation in a Steel Ladle
Influence of Slab Transportation and Handling Practice on Crack Sensitivity of Micro-alloyed Steels
Liquid-liquid Extraction Thermodynamic Parameter Estimator (LLEPE) for Multicomponent Separation Systems
Low Temperature Aluminothermic Reduction of Metal Oxides
Modelling of Metal Loss in Ferromanganese Furnace Tapping Operations
Numerical Simulation of the Influence of Particle Physical Properties on Flow Field during the Aeration Leaching Process
Stress Development Simulation in Continuously Cast Steel Slabs during Cooling Process
The Role of Copper in Combustion Processes
Thermodynamic Examination of Quaternary Compounds in the Ag–Fe–(Ge, Sn)–Se Systems by the Solid-state EMF Method
Thermodynamic Modeling of Iron-copper-sulfuric Acid Solutions during Solvent Extraction and Electrowinning for Copper Production
X-ray and Neutron Radiographic Experiments on Particle-laden Molten Metal Flows

Questions about ProgramMaster? Contact