Effects of sintering temperature on dielectric and piezoelectric properties of KNN-LS-BF-0.4mol%CuO lead-free piezoelectric ceramics
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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.
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