期刊
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
卷 83, 期 6, 页码 1379-1385出版社
AMER CERAMIC SOC
DOI: 10.1111/j.1151-2916.2000.tb01397.x
关键词
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Lead zirconate titanate (PZT) (52/48) powders were prepared by a sol-gel process, using different raw materials to introduce the lead component together with several solvents and chemical modifying agents. A study of the effect of these variables on crystallization behavior was conducted to determine the best conditions for preparing monophasic submicrometer-sized PZT perovskite powders in the morphotropic region. In the present work, well-crystallized, submicrometer-sized single-phase perovskite PZT powders were obtained after heat treatment at 600 degrees C for 1 h. The dependence of this crystallization temperature on the preparation conditions was observed. The sol-gel-derived submicrometer-sized PZT powders were sintered to similar to 96% of relative density after 2 h at 950 degrees-970 degrees C. The sintered ceramics exhibited a dielectric permittivity of 1000, a piezoelectric coefficient of 135 pC.N-1, a remanent polarization of 20 mu C.cm(-2), and a coercive field of 10.6 kV.cm(-1).
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