Effects of NaNbO3-Co2O3 Co-additive on the properties of PZN-PZT ceramics

Yihua Deng; Dongxiang Zhou; Zhiqiang Zhuang

doi:10.1007/s11595-006-4722-6

Journal of Wuhan University of Technology Materials Science Edition ›› 2007, Vol. 22 ›› Issue (4) : 722 -724. DOI: 10.1007/s11595-006-4722-6

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Effects of NaNbO₃-Co₂O₃ Co-additive on the properties of PZN-PZT ceramics

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Abstract

NaNbO₃-Co₂O₃ co-added PZN-PZT (PZCNNT) ceramics were prepared using conventional solid state reaction. The piezoelectric and dielectric properties were measured. The experimental results show that the addition of 0.3mol% Co₂O₃ leads to low dielectric loss (tg δ) in PZCNNT ceramics and the proper addition of NaNbO₃ not only improves piezoelectric properties but also decreases intensively dielectric loss and mechanical loss. The optimal ceramic having d ₃₃=310 pC/N, k _p=0.59, ɛ r=985, tg δ=0.0034, Q _m=1380 was obtained.

Keywords

PZN-PZT / piezoelectric constant / dielectric constant / dielectric loss

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Yihua Deng, Dongxiang Zhou, Zhiqiang Zhuang. Effects of NaNbO₃-Co₂O₃ Co-additive on the properties of PZN-PZT ceramics. Journal of Wuhan University of Technology Materials Science Edition, 2007, 22(4): 722-724 DOI:10.1007/s11595-006-4722-6

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