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Meeting Materials Science & Technology 2020
Symposium Sintering and Related Powder Processing Science and Technologies
Presentation Title Flash Sintering Solid State Ceramic Electrolytes Using a Novel Multi- electrode Approach
Author(s) Gareth M. Jones, Christopher Green, David Pearmain, Geoff West, Emma Kendrick, Claire Dancer
On-Site Speaker (Planned) Gareth M. Jones
Abstract Scope Flash sintering (FS) is a promising new technology using electric fields to rapidly densify ceramics at reduced furnace temperatures. FS is of interest for the sintering of sensitive materials such as solid-state battery electrolytes, where volatilisation of charge carriers is a significant issue at conventional furnace temperatures. A key challenge for FS is hotspot formation, unavoidable for most geometries, leading to microstructural inhomogeneity. Here, a technical solution to this problem is presented using a multiple electrode approach, simultaneously driving three separate electrodes to homogenise the current distribution throughout a ceramic green. We show that the current distribution can be controlled using bespoke nonlinear controllers, which drive the electrodes according to appropriate temporal relationships. We demonstrate the viability of this approach by FS of the solid-state electrolyte sodium beta alumina, linking the processing conditions to the development of microstructural features.
Proceedings Inclusion? Undecided


Coarsening of Several Ceramic Particle Systems
Electron Microscopy Observation of Electric Field Assisted Sintering of Stainless Steel Nanoparticles
Flash Sintering Solid State Ceramic Electrolytes Using a Novel Multi- electrode Approach
Grain Growth Measurements of Anti-thermal Strontium Titanate with Non-destructive High Energy X-ray Diffraction Microscopy (HEDM)
Novel Low-temperature Copper Sintering Paste for Large-area Die Attachment at 200 ℃ in Nitrogen Atmosphere
On the Bending of High-aspect Ratio Freestanding Aerosol Jet Printed Micropillar Arrays during Thermal Sintering
Reduced Pressure Nanosintering during Environmentally Controlled – Pressure Assisted Sintering
Selective Sintering Technique: Modeling and Experimentation
The Effect of Cryogenic Milling and Parameters of Spark Plasma Sintering on Microstructure, Phase Composition and Mechanical Properties of Metastable Beta Titanium Alloy Ti-15Mo
The Effect of Texturing by Applied Magnetic Field on Grain Growth of Alumina

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