摘 要: 以 Pb3O4、ZrO2 和 TiO2 为原料, 采用冲击波加载技术合成锆钛 酸铅 Pb (Zr0.95Ti0.05)O3 粉体, 并对粉体活性和烧结特性进行 XRD 和 SEM 表征, 研究结果表明, 利用冲击波的高温高压作用可以合成单一 钙钛矿相锆钛酸铅粉体, 合成粉体产生了细化并存在一定程度的晶格 畸变, 有利于增强粉体活性, 促进了低温活化烧结, 也显著地改善了陶 瓷的烧结性能, 在常压下 1 200 ℃烧 结 150 min 得 到 了 密 度 达 到 7.83 g/cm3 的锆钛酸铅 95/5 陶瓷体, 比传统固相法制备的粉体烧结温 度降低了 100 ℃左右, 且得到的陶瓷体晶粒形状、大小均匀。
关键词: 压电陶瓷; 锆钛酸铅; 烧结性能
Abstract: Pb (Zr0.95Ti0.05)O3 powder was synthesized from the mixture of Pb3O4, ZrO2 and TiO2 by using the shock-loading technology. The activity and sintering characteristics of the powder was characterized by XRD and SEM. The results showed that the single-phase perovskite Pb (Zr0.95Ti0.5)O3(PZT95/5) powder was prepared successfully with the effects of high-temperture and high-pressure of shock wave. The grain refinement and lattice distortion were observed in Pb (Zr0.95Ti0.05)O3 powder which en hanced the activity of powder and advance the activated low-temperature sintering, also ameliorated the sintering performance of Pb (Zr0.95Ti0.05)O3ceramic. After the pressure less sintered at 1 200 ℃ for 1 50 min,Pb (Zr0.95Ti0.05)O3 ceramic was obtained with density of 7.83 g/cm3, it cut down about 100 ℃ lower than the powder prepared by solid and its ce ramic microstructure of grains was equality and homogeneity.
Keywords: piezoelectric cermic; lead zircon-titanate; sintering perfor mance
