纳米晶PT粉末与PT/P(VDF-TrFE) 0-3纳米复合材料的性能

ISAF '96. Proceedings of the Tenth IEEE International Symposium on Applications of Ferroelectrics Pub Date : 1996-08-18 DOI:10.1109/ISAF.1996.598063

Y. Chen, H. Chan, C. Choy

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引用次数: 5

摘要

采用溶胶-凝胶法制备了纳米级钛酸铅粉体。将PT凝胶在不同温度下退火，得到不同粒径的粉末。采用x射线衍射(XRD)、热重分析(TGA)、差热分析(DTA)和差示扫描量热法(DSC)研究了PT粉末的结构随退火温度的变化。采用XRD和粒度分析仪分别测定了PT粉末的晶粒尺寸和粒度。采用尺寸为30 ~ 270 nm的PT粉体，制备了PT体积分数为0.4的PT/P(VDF-TrFE) 0-3复合材料。用阻抗分析仪测量了复合材料的介电常数。极化后，测定了复合材料的压电系数和热释电系数。

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Properties of nanocrystalline PT powder and PT/P(VDF-TrFE) 0-3 nanocomposites

Nanometer-size powder of lead titanate (PT) was prepared using the sol-gel process. The PT gel was annealed at various temperatures to produce powder with different particle sizes. The structural variation of the PT powder with annealing temperatures was studied by X-ray diffraction (XRD), thermogravimetric analysis (TGA), differential thermal analysis (DTA) and differential scanning calorimetry (DSC). The crystallite size and particle size of the PT powder were measured by XRD and a particle size analyzer, respectively. PT/P(VDF-TrFE) 0-3 composites with a PT volume fraction of 0.4 were prepared by using PT powder of size 30 nm to 270 nm. The permittivities of the composites were measured using an impedance analyzer. After poling, the piezoelectric and pyroelectric coefficients of the composites were also determined.

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ISAF '96. Proceedings of the Tenth IEEE International Symposium on Applications of Ferroelectrics

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