| Autor: |
Donnelly, Niall J., Shrout, Thomas R., Randall, Clive A. |
| Předmět: |
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| Zdroj: |
Journal of the American Ceramic Society; Jul2008, Vol. 91 Issue 7, p2182-2188, 7p, 1 Black and White Photograph, 2 Charts, 11 Graphs |
| Abstrakt: |
The densification of a Sr, K, Nb (SKN)-doped PZT ceramic has been modified using different flux chemistries. The most successful flux is Li2CO3 of which a 0.9 mol% addition promotes almost complete densification at 900°C. Structure property relationships in the Li2CO3 flux-sintered (1− x)PZT– xSKN system (0.01< x<0.05) are compared with conventionally sintered material. Consequences of flux interactions include increased conductivity and a shift in the optimum (1− x)PZT– xSKN composition. The flux sintered PZT–0.03SKN composition exhibits a high field d33 piezoelectric coefficient of 640 pm/V and a Curie temperature of ∼350°C. The unipolar polarization hysteresis loss is ∼23 kJ/m3 and varies little with temperature up to 150°C. Finally, we demonstrate successful cofiring of a multilayer structure at 900°C using Li2CO3-fluxed PZT–SKN and pure silver electrodes. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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