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化学 压电常数 In this case,the ceramics sintered at 1200℃ had the highest electromechanical coupling coefficients and piezoelectric constant,the least dielectric loss and proper dielectric constant. 实验结果表明,此四元系材料具有较宽的烧结温度范围;在1200℃烧结工艺条件下,材料的机电耦合系数与压电常数最大,介电损耗最小,介电常数适中。
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机械工程 压电常数 The results show that the piezoelectric constant and theε_r is nearly independent of the humidity below 85%. 结果表明,当相对湿度低于85%时,压电常数及εr随湿度的变化不大;当高于85%时,压电电压常数g_(33)急剧降低,ε_r则急剧增大。 压电系数 Besides these effects and characteristics according to the ferroelectric domain, piezoelectric constant and surface energy correlated to internal stress of thin film can be measured with SFM. SFM 除可以研究与极化相关的电畴结构及性能以外,还可以用于薄膜压电系数的测量及表面能的研究。 压电常量
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