Reaction Mechanism on Preperation of Ta with SOM Process

Chao Yi Chen; Ying Lu Lv; Jun Qi Li

doi:10.4028/www.scientific.net/AMR.690-693.30

Paper Titles

Structure and Physical Properties of Liquid Ni₂Sb₉₈ Eutectic Alloy
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The Microstructure Evolution and Twinning Characterization of AZ31 Mg Alloy Sheet in Low-Temperature Bending Process
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An Experimental Study of High-Velocity Impact on Aluminum Foam Composite Shield Structure
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Extraction of Tantalum from Ta₂O₅ Using SOM Process
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Reaction Mechanism on Preperation of Ta with SOM Process
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Sintering Characters Analysis of the Al₂O₃-86 Homogenized Bauxite
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Step Reactive Sintering of Ti2AlNb Based Alloy with Element Powders
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Study on Microstructures and Mechanical Properties of Die Casting Mg-xGd-3Y-0.5Zr Alloys
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Study on Sintering Properties of Al₂O₃-70 Natural Mullite by New Processes
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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 690-693Reaction Mechanism on Preperation of Ta with SOM...

Reaction Mechanism on Preperation of Ta with SOM Process

Abstract:

Tantalum metal was prepared by Solid Oxygen-ion Conducting Membrane (SOM) technology from Ta₂O₅ directly in molten CaCl₂. Through reaction mechanism of the metal-oxide-electrolyte three-phase interline (3PIs), the influence of pellets microstructure on the electrolysis process and products morphology were discussed. The results demonstrate that forming pressure, particle size and porosity of cathode pellets are significant factors for three-phase interline during electrolysis process. It was found that the big porosity and small particle can enhance the deoxidization rate, Contrarily, the compact out-layer of tantalum metal was formed. While the Ta2O5 pellet was pressed by 4MPa and sintered at 1150°C for 2 h has rational porosity and particle, the electrochemical reduction can be achieved via two steps: Ta₂O₅Ta₂O_5-xTa.