Abstract
The mechanism of intrinsic breakdown in ceramics and insulating polymers is not clearly understood. A common feature in these materials is the existance of internal grain boundaries that provide a natural barrier to conduction. Here we propose that external electric fields work to alter the barrier heights at the various grain boundaries (GBs). A dynamic model for current conduction in ceramics is developed. This random Voronoi network of grains can model percolative paths through the sample, the overall current-voltage characteristics, and estimates effects of variations in grain size.
| Original language | English |
|---|---|
| Title of host publication | 2005 Annual Report Conference on Electrical Insulation and Dielectric Phenomena, CEIDP '05 |
| Pages | 544-547 |
| Number of pages | 4 |
| DOIs | |
| State | Published - 2005 |
| Event | 2005 Conference on Electrical Insulation and Dielectric Phenomena, CEIDP '05 - Nashville, TN, United States Duration: Oct 16 2005 → Oct 19 2005 |
Publication series
| Name | Annual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP |
|---|---|
| Volume | 2005 |
| ISSN (Print) | 0084-9162 |
Conference
| Conference | 2005 Conference on Electrical Insulation and Dielectric Phenomena, CEIDP '05 |
|---|---|
| Country | United States |
| City | Nashville, TN |
| Period | 10/16/05 → 10/19/05 |
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Cite this
Zhao, G., Joshi, R. P., & Lakdawala, V. K. (2005). Percolative breakdown model for ceramics based on a random grain-boundary network. In 2005 Annual Report Conference on Electrical Insulation and Dielectric Phenomena, CEIDP '05 (pp. 544-547). [1560740] (Annual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP; Vol. 2005). https://doi.org/10.1109/CEIDP.2005.1560740