Enhanced piezoelectric properties of (K_0.40Na_0.60)_0.94Li_0.06Nb_0.94SbO₃ lead-free ceramics by optimizing the sintering temperature

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• 作者：Tao Chen ; Hongli Wang ; Ting Zhang ; Guangchang Wang ; Jifang Zhou ; Jianwei Zhang ; Yuhong Liu
• 关键词：C. Electrical properties ; C. Piezoelectric properties ; (KNa)NbO3 ; Lead-free ceramics ; Sintering temperature
• 刊名：Ceramics International
• 出版年：April, 2014
• 年：2014
• 卷：40
• 期：3
• 页码：4341-4344
• 全文大小：789 K

文摘

Effects of sintering temperature on the microstructure and electrical properties of (K_0.40Na_0.60)_0.94Li_0.06Nb_0.94SbO₃ (KNLNS) lead-free ceramics are investigated. The grain size gradually becomes larger with increasing sintering temperature from 1055 掳C to 1105 掳C, and the piezoelectric property could be enhanced by optimizing their sintering temperature. The ceramic sintered at 1075 掳C has optimum electrical properties, i.e., d₃₃~272 pC/N, k_p~43.5%, 蔚_r~1152, tan 未~0.026, and T_C~346 掳C. These results show that the sintering temperature can optimize electrical properties of KNLNS ceramics.