The densification of a Sr, K, Nb (SKN)-doped PZT ceramic has been modified using different flux chemistries. The most successful flux is Li 2CO 3 of which a 0.9 mol% addition promotes almost complete densification at 9001C. Structure property relationships in the Li 2CO 3 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 d 33 piezoelectric coefficient of 640 pm/ V and a Curie temperature of ̃350°C. The unipolar polarization hysteresis loss is ̃23 kJ/m 3 and varies little with temperature up to 150°C. Finally, we demonstrate successful cofiring of a multilayer structure at 900°C using Li 2CO 3-fluxed PZT- SKN and pure silver electrodes.
All Science Journal Classification (ASJC) codes
- Ceramics and Composites
- Materials Chemistry