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首页> 外文期刊>IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control >Porous PZT ceramics for receiving transducers
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Porous PZT ceramics for receiving transducers

机译：用于接收传感器的多孔PZT陶瓷

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摘要

PZT-air (porous PZT) and PZT-polymer (polymer impregnated porous PZT) piezocomposites with varying porosity/polymer volume fractions have been manufactured. The composites were characterized in terms of hydrostatic charge (d/sub h/) and voltage (g/sub h/) coefficients, permittivity, hydrostatic figure of merit (d/sub h/.g/sub h/), and absolute sensitivity (M). With decreasing PZT ceramic volume, g/sub h/ increased, and d/sub h/.g/sub h/ had a broad maximum around 80 to 90% porosity/polymer content. The absolute sensitivity was also increased. In each case, PZT-air piezocomposites performed better than PZT-polymer piezocomposites. Hydrophones constructed from piezocomposites showed slightly lower measured receiving sensitivities than calculated values for piezocomposite materials, which was due to the loading effect of the cable and the low permittivity associated with the piezocomposites.
机译：已经制造出具有变化的孔隙率/聚合物体积分数的PZT-空气（多孔PZT）和PZT-聚合物（聚合物浸渍的多孔PZT）压电复合材料。通过静水电荷（d / sub h /）和电压（g / sub h /）系数，介电常数，静水性能指标（d / sub h / .g / sub h /）和绝对灵敏度来表征复合材料（男）。随着PZT陶瓷体积的减小，g / sub h /增大，而d / sub h / .g / sub h /的孔隙率/聚合物含量约为80-90％。绝对灵敏度也增加了。在每种情况下，PZT空气压电复合材料的性能均优于PZT聚合物压电复合材料。由压电复合材料制成的水听器显示的测得的接收灵敏度比压电复合材料的计算值略低，这是由于电缆的负载效应和与压电复合材料相关的低介电常数所致。

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