Each company's piezoelectric ceramic products have their own formulas and performance standards. Therefore, there is no exact definition of the best piezoelectric ceramic. The most suitable performance indicators and parameter values for your project are the best. Every customer has different requirements for the performance of piezoelectric ceramics, some require strong mechanical properties, and some require high sensitivity.
So we have come to a consensus: we cannot simply judge whether a piezoelectric ceramic is the worst or the best. The most suitable one is the best as long as it meets the customer's required performance. Therefore, before purchasing piezoelectric ceramics, a detailed analysis and investigation of the performance and application requirements of the piezoelectric ceramic material should be conducted.
We provide some commonly used parameters of piezoelectric ceramics for your reference:
Piezoelectric coefficient (d33, d31, d15) measures the strain caused by the applied voltage. A high d coefficient indicates a larger displacement required for driving transducer equipment. The coefficient d33 measures the deformation in the same direction as the induced potential (polarization axis), while d31 describes the response when the force is applied perpendicular to the polarization axis. The d15 coefficient measures the response when the applied mechanical stress is due to shear deformation.
Relative dielectric constant (εr) is the ratio between the absolute dielectric constant ε of the piezoelectric material and the vacuum dielectric constant ε0.
The electromechanical coupling coefficient is an indicator of the effectiveness of piezoelectric materials in converting electrical energy into mechanical energy, or vice versa.
The mechanical quality factor Qm is an important high-power characteristic of piezoelectric ceramics. It is the reciprocal of the mechanical loss tangent tan ϕ.
2、Who are the piezoelectric ceramic manufacturers
APC International Ltd. - Mackeyville, PA
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- Custom Manufacturer
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