Effects of sintering temperature on dielectric and piezoelectric properties of KNN-LS-BF-0.4mol%CuO lead-free piezoelectric ceramics
KNN-LS-BF-0.4mol%CuO piezoelectric ceramics were prepared by the traditional sintering method. The effects of sintering temperature on the dielectric and piezoelectric properties of KNN-LS-BF-0.4mol%CuO ceramics were studied. The results reveal that the sintering temperature has significant influence on the microstructure and the properties of KNN-LS-BF-0.4mol%CuO ceramics. With the increase of sintering temperature from 1,040 to 1,080 °C, the grains become more homogeneous and more tight-arrangement, resulting in the higher relative density as well as the best dielectric and piezoelectric properties. However, the properties of the samples would be deteriorated as they are sintered over 1,080 °C.
KeywordsSinter Temperature Tetragonal Phase Piezoelectric Property Sb2O3 Piezoelectric Ceramic
The authors wish to acknowledge the financial support of the Guangxi Nature Science Foundations, Grant No. 2010GXNSFD013007.
- 1.B. Jaffe, W.R. Cook, H. Jaffe, Piezoelectric Ceramics (Academic Press, New York, 1971)Google Scholar
- 6.H.Y. Park, C.W. Ahn, K.H. Cho, S. Nahm, H.G. Lee, H.W. Kang, D.H. Kim, K.S. Park, J. Am. Ceram. Soc. 90, 4066 (2007)Google Scholar
- 19.I.T. Seo, H.Y. Park, N.V. Dung, M.K. Choi, S. Nahm, H.G. Lee, B.H. Choi, IEEE Trans. Ultrason. Ferroelectr. Freq. Control. 56, 2337 (2009)Google Scholar