| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 10626533 | Ceramics International | 2005 | 4 Pages |
Abstract
The electrical resistivity of (Ba0.69Pb0.31)TiO3 PTCR ceramic thermistors aged at temperatures of 175, 200, 250 and 300 °C, respectively, were measured. When the samples were aged at temperatures of 175 and 200 °C, room-temperature resistivity decreased at the initial ageing stage, and then increased with the ageing time. The samples displayed a monotonous rise of the room-temperature resistivity when the ageing treatments were performed at 250 and 300 °C. PTCR effects showed different characteristics after different ageing treatments. These ageing characteristics were analyzed by considering interior oxidation and reduction reactions.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Zhi Cheng Li, Bill Bergman,