| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1296392 | Solid State Ionics | 2010 | 5 Pages |
Abstract
Diffusion induced grain-boundary migration (DIGM) was observed when 4 and 9 mol% SrO-doped CeO2 (SrDC) ceramics were heat-treated at 1300 °C after sintering at 1600 °C. In the 9 mol% SrDC specimen, the curvature and distance of boundary migration were increased significantly as the heat-treatment time was increased from 10 min to 10 h at 1300 °C. This induced a ~ 2.9-fold increase of the apparent grain-boundary resistivity, which was explained by the physico-chemical change of the grain-boundary structure and/or the current constriction effect due to the undulated boundary morphology.
Related Topics
Physical Sciences and Engineering
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Authors
Pyeong-Seok Cho, Seung-Young Park, Jeong-Joo Kim, Hyoung-Seok Do, Hyun-Min Park, Jong-Heun Lee,