为了克服传统泛音比法的这一弊端，提出了测定压电振子厚度振动机电耦合系数的高次泛音比法。
To overcome the shortcoming of the traditional overtone ratio method, a higher overtone ratio method to determine the thickness vibration electromechanical coupling factors was presented.
而压电性能表明在不同方向的机电耦合系数均比石英晶体相应参数大得多。
The piezoelectric property indicates that the electromechanical coupling coefficients in the different directions are much larger than the corresponding parameter of quartz crystal.
单晶的压电性能测试结果为：平面和厚度机电耦合系数分别为0.69、0.49；
The piezoelectric properties of single crystals as below: piezoelectric coupling coefficient k_p(k_t) are 0.69(0.49);
大功率压电陶瓷要求材料不但在强场下有小的介质损耗，大的机械品质因数，同时兼备一定的压电常数和机电耦合系数。
High-power piezoelectric ceramics are desirable to combine a high mechanical quality factor(Qm) with a high piezoelectric constant(d 33) and a high planar coupling factor(Kp).
大功率压电陶瓷要求材料不但在强场下有小的介质损耗，大的机械品质因数，同时兼备一定的压电常数和机电耦合系数。
High-power piezoelectric ceramics are desirable to combine a high mechanical quality factor(Qm) with a high piezoelectric constant(d 33) and a high planar coupling factor(Kp).
应用推荐