I-W Chen—contributing editor
Surface Diffusion-Controlled Neck Growth Kinetics in Early Stage Sintering of Zirconia, with and without Applied DC Electrical Field
Article first published online: 3 NOV 2010
© 2010 The American Ceramic Society
Journal of the American Ceramic Society
Volume 94, Issue 2, pages 391–395, February 2011
How to Cite
Cologna, M. and Raj, R. (2011), Surface Diffusion-Controlled Neck Growth Kinetics in Early Stage Sintering of Zirconia, with and without Applied DC Electrical Field. Journal of the American Ceramic Society, 94: 391–395. doi: 10.1111/j.1551-2916.2010.04088.x
This work was financially supported by the Basic Energy Sciences Division of the Department of Energy under Grant No. DE-FG02-07ER46403.
- Issue published online: 7 FEB 2011
- Article first published online: 3 NOV 2010
- Manuscript No. 27616. Received February 26, 2010; approved July 23, 2010.
We report on the measurements of neck growth in early stage sintering of yttria-stabilized zirconia powders with and without the application of electrical fields. It is concluded that surface diffusion kinetics are not influenced by the application of DC electrical fields and currents. These measurements are in contrast to the influence of electrical fields on grain growth, where weak applied fields have been shown to significantly retard grain growth. The activation energy for surface diffusivity obtained in this way is in the range that is expected from literature values. Together, these results provide further insights into relationships between electrical fields and interfacial phenomena in the sintering and grain growth of ceramic materials.