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A combined sintering aid mixture of B2O3 and CuO for lead-free piezoelectric ceramics 0.95K0.5Na0.5NbO3-0.05BaTiO3 (KNN-BT) is introduced. The effects of the mixture sintering aids of 0.6B2O3-0.4CuO on the sintering behavior, microstructure, and electrical properties for KNN-BT are investigated. Adding 2wt% of sintering aids can effectively broaden the narrow range of sintering temperature from 20°C...
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