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| 压电陶瓷有何制造特点 |
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压电陶瓷主要用于制造超声换能器、水声换能器、电声换能器、陶瓷滤波器、陶瓷变压器、陶瓷鉴频器、高压发生器、红外探测器、声表面波器件、电光器件、引燃引爆装置和压电陀螺等。 Piezoelectric ceramic manufacture characteristic in ferroelectric ceramics under DC electric field on the polarization, so it has a piezoelectric effect. General polarized electric field is 3 ~ 5kV/mm, temperature 100~ 150° C, 5 ~20min. These three are the main factors affecting polarization effect. Better performance of the piezoelectric ceramics, such as lead zirconate titanate system ceramic, the electromechanical coupling coefficient can be up to 0.313~ 0.694. |
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