The scientific questions and technological opportunities of flash sintering: From a case study of ZnO to other ceramics

SCRIPTA MATERIALIA

卷:146

Article

Luo, Jian¹ 

[1] Univ Calif San Diego, Program Mat Sci & Engn, Dept NanoEngn, La Jolla, CA 92093 USA

关键词: Sintering;    Flash sintering;    Water-assisted flash sintering;    Two-step flash sintering;    Field-assisted sintering;   

DOI  :  10.1016/j.scriptamat.2017.12.006

来源: Elsevier

【 摘 要 】

This viewpoint article critically assesses several scientific and technological questions regarding flash sintering: (1) How does a flash start? (2) What are the possible mechanisms 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 nanomystalline 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. (C) 2017 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

【 授权许可】

Free