Piezoelectric Properties Study of KNN-LS Lead-Free Ceramics Synthesized by Sol-Gel Method

Xin Jin; Xing Hua Fu; Wen Hong Tao; Yang Lu Hou

doi:10.4028/www.scientific.net/AMM.538.15

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 538Piezoelectric Properties Study of KNN-LS Lead-Free...

Piezoelectric Properties Study of KNN-LS Lead-Free Ceramics Synthesized by Sol-Gel Method

Abstract:

Morphotropic phase boundary (MPB) composition, KNaNbO₃-0.052LiSbO₃(KNN-LS) was synthesized by sol-gel method at this experiment. Sb₂O₃ was used as economic Sb source and the final dried gel was calcined at 650°C for 2h to obtain white nanopowder. The sintering experiment was carried out at the temperature range of 980°C-1130°C, and perovskite phase structure could be observed apparently below 1080°C. When the temperature reached 1080°C and above, the second phase Na₃LiNb₆O₁₇ appeared meanwhile the piezoelectric coefficient (d₃₃) decreased quickly. Its proven that fine-grained particles and low sintering temperature could be obtained in sol-gel route.

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Periodical:

Applied Mechanics and Materials (Volume 538)

Pages:

15-18

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.538.15

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Online since:

April 2014

Authors:

Xin Jin*, Xing Hua Fu, Wen Hong Tao, Yang Lu Hou

Keywords:

Piezoelectric Ceramic (PZT), Potassium Sodium Niobate, Sol-Gel

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