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Meeting Materials Science & Technology 2019
Symposium Sintering and Related Powder Processing Science and Technologies
Presentation Title Staged Microstructural Study of Flash Sintered Titania
Author(s) Xin Li Phuah, Han Wang, Harry Charalambous, Shikhar K Jha, Jin Li, Thomas Tsakalakos, Xinghang Zhang, Haiyan Wang
On-Site Speaker (Planned) Xin Li Phuah
Abstract Scope Flash sintering offers more control of microstructure owing to its additional sintering conditions compared to conventional sintering, including electric field, current density limit and holding time. A systematic study of flash sintered TiO2 is presented to investigate the effects of flash sintering conditions on the asymmetrical microstructure and defect structure across the two electrodes of the samples. Grain growth has been found to be more prominent near the positive electrode and significantly influenced by the current density limit. Extended defects, including dislocations and stacking faults, have been observed near the positive electrode due to the generation and coalescence of oxygen vacancies by the electric field. The generation of defects is highly dependent on the strength of electric field and the defect density decreases with additional grain growth under a longer holding time.
Proceedings Inclusion? Definite: At-meeting proceedings

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

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Investigation the Effect of CNT and GNP Additions on Densification, Microstructure and Mechanical Properties of B4C Prepared by Spark Plasma Sintering
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P2-71: Field-induced Mass Transport Phenomena in Flash Sintered High Temperature Ceramics Explored by TEM and In situ SEM
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Production and Characterization of AlON Ceramics with Different Amount of MgO Addition via Reactive Spark Plasma Sintering
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Simulation of Densification of Contacting Particles using a Two-dimensional Monte Carlo Model for Solid State Sintering
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Spark Plasma Sintering of Titanium Diboride Ceramics with Different Amount of Titanium Addition
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Stochastic Modeling of the Effect of Structural Randomness on the Mechanical Behaviors of 3D Printed Metallic Powders
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