期刊
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
卷 27, 期 10, 页码 3127-3133出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.jeurceramsoc.2007.01.003
关键词
sintering; viscous behaviour; CeO2; fuel cells
The sintering behaviour of nanocrystalline gadolinium-doped ceria was investigated. The uniaxial viscosity determined from isothermal discontinuous sinter forging experiments. It increased dramatically during sintering from a few GPa-s at 85% to similar to 120 GPa-s at 97% relative density. These values, however, are much lower than those measured for other oxide materials with submicron sizes because of much finer grain size. Since the experiments were done under isothermal conditions, it is possible to evaluate separately the effects of the relative density and the grain size. Due to grain coarsening, the effect of grain size becomes significant at high relative density, as some available models predict. It was found that Rahaman's model best fit the experimental data. (C) 2007 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