无机材料学报2015，Vol.30Issue(5)：500-504,5.DOI:10.15541/jim20140431
微波烧结对PLZT陶瓷电学性能的影响
Effect of Microwave Sintering on Electrical Properties of PLZT Ceramics
摘要
Abstract
Lead lanthanum zirconate titanate(PLZT) powders synthesized by partial co-precipitation method were used to fabricate PLZT ceramics by conventional muffle furnace or by microwave muffle furnace. The crystal structure, microstructure, electrical properties of PLZT ceramics prepared by these two methods were investigated. The results show that the PLZT ceramics sintered by these two methods are pure perovskite structure. Microwave sintered PLZT ceramics possess smaller grain, more uniform size and less holes than do the conven tional prepared. The microwave sintering temperature is much lower than that by the conventional method, and the duration time is also much less, while the electrical properties of the ceramics sintered by these two methods are similar. The best properties of PLZT ceramics can be gained by microwave sintering at 1000℃ with dielectric constant and piezo-electric constant of 2512 and 405 pC/N. The remnant polarization is 16.5 kV/cm, and the coercive field is 8.2μC/cm2. The dielectric constant and piezoelectric constant of PLZT ceramics sintered by conventional method at 1250℃ reach the maximum values of 2822 and 508 pC/N. The remnant polarization is 21.6 kV/cm and the coercive field is 9.6μC/cm2.关键词
锆钛酸铅镧/微波烧结/压电性能/介电性能Key words
lead lanthanum zirconate titanate/microwave sintering/piezoelectric/dielectric分类
化学化工引用本文复制引用
龙廉骏,徐建梅,公衍生,武明阳,崔新友..微波烧结对PLZT陶瓷电学性能的影响[J].无机材料学报,2015,30(5):500-504,5.基金项目
国家自然科学基金(61271141) （61271141）
武汉市应用基础研究项目(2015010101010009) National Natural Science Foundation of China(61271141) （2015010101010009）
Wuhan Basic Researchfor Application(2015010101010009) （2015010101010009）
