【摘要】 为降低锆钛酸铅（PZT）压电陶瓷的烧结温度，以Li₂CO₃-Bi₂O₃作为复合烧结助剂，采用固相反应法制备了PZT基压电陶瓷粉，系统地研究了烧结助剂Li₂CO₃-Bi₂O₃的掺杂量及烧结温度对PZT压电陶瓷相结构、微观形貌及电学性能的影响。在Li₂CO₃-Bi₂O₃掺杂量（质量分数）为1.3%时，PZT压电陶瓷的烧结温度可由1 250℃降低至900～950℃,具有较宽的烧结温度范围，同时陶瓷表现出优异的电学性能。烧结温度为900℃时，陶瓷的压电应变常数d₃₃达到最大值538 pC/N;烧结温度为950℃时，陶瓷的压电电压常数g₃₃达到最大值43.27 mVm/N。同时实现了陶瓷-电极低温共烧，共烧后的陶瓷片d₃₃可达530 pC/N。更多还原

【Abstract】 To reduce the sintering temperature of lead zirconate titanate（PZT） piezoelectric ceramics, PZT-based piezoelectric ceramics were fabricated via a solid-state reaction with Li₂CO₃ and Bi₂O₃ as composite sintering aids. The effects of the doping amount of Li₂CO₃-Bi₂O₃ and the sintering temperature on the phase structure, microstructure, and electrical properties of PZT piezoelectric ceramics were comprehensively investigated. When the doping amount of Li₂CO₃-Bi₂O₃ is 1.3 wt%, the sintering temperature of PZT piezoelectric ceramics can be decreased from 1 250 ℃ to 900-950 ℃, which is a wide sintering temperature range, and the ceramics exhibit outstanding electrical properties. The piezoelectric strain constant d₃₃ can reach 538 pC/N when the sintering temperature is 900 ℃, and the piezoelectric voltage constant g₃₃ reaches a maximum of 43.27 mVm/N when the sintering temperature is 950 ℃. Simultaneously, low-temperature co-firing of the ceramics and electrodes is accomplished, and the d₃₃ of the ceramic chip after co-firing reaches 530 pC/N.更多还原