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Piezoceramic Properties?




Piezoceramic Properties


电力转换器 传感器 启动器
  Power transducers  Sensors Actuators
相对介电常数ε?? τ/ε0 Relative permittivity ε?? τ/ε0 1,000 – 1,300 1,500 – 1,850 1,800 – 3,800
损失因子tanδ Loss factor tan δ 2x10?3-3x10?3 2x10?3-20x10?3 15x10?3-16x10?3
频率常数Np Frequency constant Np 2,210 – 2,280 2,020 – 2,050 1,960 – 2,010
KHz?mm KHz?mm
耦合系数kP Coupling factor kP 0.55 – 0.57 0.59 – 0.62 0.65
充电常数 d?? Charge constant d?? 240 – 310 390 – 450 475 – 680
10?12 C/N 10?12 C/N
电压常数g?? Voltage constant g?? 26.9 – 27.1 26.9 – 33.1 20.2 – 28.5
10?3 Vm/N 10?3 Vm/N
弹性合格S??ε Elastic compliance S??ε 11.4 – 14.9 16.3 – 18.5 15.8 – 17.9
10?12 m2/N 10?12 m2/N
弹性刚度C??? Elastic stiffness  C??? 15.9 – 16.2 14.5 – 15.8 14.7 – 15.2
101?N/m2 101?N/m2
密度g / cm2 Density g/cm2 7.65 – 7.70 7.65 – 7.80 7.70 – 7.83
质量Qm Quality Qm 500 – 1,000 60 – 90 75 – 80
老化率Cε,% Aging rate Cε, % -4.5 to -3.0 -2.3 to -0.3 - 1.6 to -0.8



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