Optimal Fabrication and Sintering Behaviors of Ferroelectric PZT/WO₃ Ceramics

Abstract

The research reports the results of an investigation into the effects of processing temperature and concentration of nano-sized WO ₃ addition on phase formation, densification and grain size of PZT ceramics. Increasing the content of WO ₃ addition and sintering temperature showed a complementary effect on tetragonal-to-rhombohedral phase formation. An addition of only 0.5 vol% of WO ₃ was found to help increase the densities as well as dramatically reduced the grain size of the PZT/WO ₃ ceramics regardless of sintering temperature used. Based on these results, optimum processing temperature is about 1200°C where high-density, high-purity PZT/WO ₃ ceramics were obtained.

Keywords:

• Solid-state reaction
• PZT-based
• phase
• densification
• grain size

Acknowledgments

This work is supported by the Thailand Research Fund (TRF), the Faculty of Science and the Graduate School, Chiang Mai University.