Mechanism of flash sintering with high electric field: In the view of electric discharge and breakdown

被引：24

作者：

Jieming Liu ^{[1
]}

Huang Rongxia ^{[2
]}

Ruobing Zhang ^{[1
]}

Guanghua Liu ^{[3
]}

Xilin Wang ^{[1
]}

Zhidong Jia ^{[1
]}

Liming Wang ^{[1
]}

机构：

[1] Tsinghua Univ, Tsinghua Shenzhen Int Grad Sch, Engn Lab Power Equipment Reliabil Complicated Coa, Shenzhen 518055, Guangdong, Peoples R China

[2] Guangdong Univ Technol, Sch Electromech Engn, Guangzhou 510006, Guangdong, Peoples R China

[3] Tsinghua Univ, State Key Lab New Ceram & Fine Proc, Sch Mat Sci & Technol, Beijing 100084, Peoples R China

来源：

SCRIPTA MATERIALIA | 2020年 / 187卷

关键词：

Flash sintering; High electric field; Room temperature; Discharge; ZnO; TEMPERATURE; ZNO; DENSIFICATION; ZIRCONIA; CERAMICS; DENSITY; OXIDE;

D O I：

10.1016/j.scriptamat.2020.06.009

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

'Thermal runaway' was the most popular mechanism in flash sintering, but this theory was inappropriate under high electric field. In this paper, we described electric discharge and breakdown phenomena in experiment to verify this point. And water moisture was found an important role in conducting electric discharge, that increasing moisture content of samples decreased the onset electric field of flash sintering and as low as 1628 V/cm of onset electric field was realized in this paper. With high electric field that can induce electric discharge in the sample, the flash sintering can be induced at room temperature and atmosphere. (C) 2020 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：93 / 96

页数：4

共 16 条

[1] Theoretical and phenomenological analogies between flash sintering and dielectric breakdown in α-alumina [J].