期刊
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
卷 36, 期 5, 页码 1253-1260出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.jeurceramsoc.2015.12.005
关键词
Flash sintering; Beta-alumina; Sodium ion conductor; Electrode reaction
资金
- Brazil Research and Formation Support Foundation CAPES [BEX 0209/14-7]
Flash sintering (FS) is a current-assisted sintering technique able to density ceramics in short periods of time (just a few seconds) at temperatures significantly lower than in conventional sintering processes. FS technique was firstly reported for yttrium-stabilized zirconia and later it had been proved successful for a large range of oxide materials that present ionic conduction by oxygen vacancies. This paper describes the use of FS on a sodium ion conductor based on a model compound, the beta-alumina. Different electrode materials have been tested, i.e., silver and platinum. The impact of the electrode reaction on the current flow, and thus, on the sintering efficiency is shown for the first time. It appears that the densification by FS can only be possible if the current collectors, i.e., the electrodes, are specifically designed to enable reversible electrochemical reactions at the interfaces between the electrodes and the ionic compound, insuring the current flow through the powder compact. (C) 2015 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据