添加CeO2的(Na0.475K0.475Li0.05)(Nb0.92Ta0.05Sb0.03)O3无铅陶瓷

2007 Sixteenth IEEE International Symposium on the Applications of Ferroelectrics Pub Date : 2007-05-27 DOI:10.1109/ISAF.2007.4393364

T. Lee, K. Kwok, H. Chan

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摘要

采用常规混合氧化法制备了添加不同量CeO2的无铅压电陶瓷(Na0.475K0.475Li0.05)(Nb0.92Ta0.05Sb0.03)O3。添加CeO2后，陶瓷的烧结性能得到了很大的改善。该陶瓷可以在较高的温度下烧结良好，因此具有较高的密度和更好的压电和介电性能。当CeO2添加量为0.4 wt%时，陶瓷的压电和介电性能最佳，d33=246 pC/N, kp=0.50, epsivr=1300，钽δ =4%。

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(Na0.475K0.475Li0.05)(Nb0.92Ta0.05Sb0.03)O3 lead-free ceramics with addition of CeO2

Lead-free piezoelectric ceramics (Na_0.475K_0.475Li_0.05)(Nb_0.92Ta_0.05Sb_0.03)O₃ added with different amounts of CeO₂ have been prepared by a conventional mixed-oxide method. After the addition of CeO₂, the sintering performance of the ceramics is greatly improved. The ceramics can be well-sintered at a higher temperature, and hence have a higher density and better piezoelectric and dielectric properties. For the ceramic added with 0.4 wt% CeO₂, the piezoelectric and dielectric properties become optimum, giving d₃₃=246 pC/N, k_p=0.50, epsiv_r=1300 and tandelta=4%.

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2007 Sixteenth IEEE International Symposium on the Applications of Ferroelectrics

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