The scientific questions and technological opportunities of flash sintering: From a case study of ZnO to other ceramics
نویسنده
چکیده
Article history: Received 8 November 2017 Received in revised form 3 December 2017 Accepted 3 December 2017 Available online xxxx This viewpoint article critically assesses several scientific and technological questions regarding flash sintering: (1) How does a flash start? (2)What are the possiblemechanisms of rapid densifications? (3)What are the electric field/current/potential effects? (4) Can we drastically reduce the flash temperature (or even start a flash at room temperature)? (5) Can we control the microstructures (e.g., fabricate dense nanocrystalline ceramics) by manipulating the electric field/current profile? ZnO is discussed as an examplar but other materials are also critically reviewed. New results of both ZnO and Y2O3-statabilized ZrO2 are presented. Open scientific questions and new technological opportunities are discussed. © 2017 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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