| Autor: |
Yan Hong, Yueming Li, Zong-Yang Shen, Run Run Li, Zhu Mei Wang |
| Rok vydání: |
2011 |
| Předmět: |
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| Zdroj: |
Advanced Materials Research. 412:290-293 |
| ISSN: |
1662-8985 |
| DOI: |
10.4028/www.scientific.net/amr.412.290 |
| Popis: |
The effects of low-temperature frit Li2O-Na2O-K2O-B2O3-SiO2-CaO-BaO-ZnO (abbreviated as BS) on the sintering behavior and electrical properties of 0.95K0.49Na0.51NbO3- 0.05LiSbO3 (abbreviated as KNN-LS) lead-free piezoceramics were investigated. The sintering temperature of the KNN-LS ceramics can be reduced from 1080 °C to 1000 °C due to the addition of BS frit. For the 0.5 wt% BS-doped KNN-LS ceramics, which are sintered at reduced temperature of 1000 °C for 2 h, remain relatively high piezoelectric constant d33 (195 pC/N) and planar electromechanical coupling coefficient kp (40.7%). In addition to other optimization effects, such as reduction of dielectric loss from 3.6% to 2.7% and increment of mechanical quality factor Qm from 48 to 70, this BS frit was experimentally proved to be good for low temperature sintering of KNN-based ceramics while maintaining high piezoelectric response. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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