期刊
CERAMICS INTERNATIONAL
卷 44, 期 13, 页码 15362-15369出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2018.05.186
关键词
-
资金
- Office of Naval Research (ONR)
- DOE Office of Science [DE-AC02-06CH11357]
- U.S. Office of Naval Research [N00014-17-1-2087, N00014-16-1-2778]
- [N00014-15-1-2492]
Flash sintering has been shown to be an effective method of sintering for many types of ceramics. However, the characteristics of flash sintering for each type of ceramic varies. When ionically conducting ceramics are sintered under a DC electric field, a strong dependence of densification with respect to position is observed. Microstructural analysis of the effect of electric field on oxygen ion conductors shows non-stoichiometry (oxygen deficiency) at the cathode which continues to build up over time under flash. In oxygen ion conductors, dominant charge carriers during flash are oxygen ions and the final density of the specimen is related to the availability of oxygen. This effect is no longer evident when using an AC power supply. Thus, use of AC instead of DC electric field is preferable for flash sintering of ionically conducting ceramics.
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