Piezoelectric
Introduction
The piezoelectric effect describes the relation between a mechanical stress and an electrical voltage in solids. The piezoelectric ceramic is a functional material that can convert mechanical energy to electrical energy with very high efficiency. It is reversbile: an applied mechanical stress will generate a voltage and an applied voltage will change the shape of the solid by a small amount (up to a 4% change in volume).
OVERVIEW
- Various shape of piezoelectric ceramics
- Uniform microstructure (Good mechanical strength)
- Excellent energy conversion efficiency
- Excellent mass production
Applications
| Classification | Products | Classification | Products |
|---|---|---|---|
| Telecommunication parts | Resonator | Appliance parts | Ignitor |
| Filter(KHz) | Buzzer Sounder | ||
| Filter(MHz) | Transformer (Inverter) | ||
| SMD type filter | Medical instrument parts | Hifu | |
| Actuator | Linear actuator | Ultrasonic Probe | |
| Sensor | Ultrasonic sensor | Hydrophone | |
| Ultrasonic Position sensor | Etc. | Ultrasonic Motor | |
| Shock Sensor | Mirror Tilter |
Piezoelectric characteristics
- Piezoelectric materials for ultrasonic transducer, hifu
category unit ECO DM LAB DM1 DM2 DM3 Relative Dielectric Constant at 1kHz, K33T 2000 1320 1350 Dielectric Loss at 1kHz, Tanδ % 3.0 0.15 0.15 Electro-mechanical coupling Coefficient, kp 0.69 0.61 0.62 Mechanical Q value 70±20 2000±200 2000±200 Curie Temperature, Tc ℃ 340 320 320 Piezoelectric Charge constant, d33 pC/N 550~600 310 320 Application Sensor Ultrasonic Cleaners, Piezoelectric transformers, Actuators for high power - Piezoelectric materials for medical instrument
category unit ECO DM LAB DM4 DM5 DM6 Relative Dielectric Constant at 1kHz, K33T 4400±100 3900±100 3300±100 Dielectric Loss at 1kHz, Tanδ % 302 3.0 2.5 Electro-mechanical coupling Coefficient, kp 0.69 0.65~0.66 0.65 Electro-mechanical coupling Coefficient, kt 0.51 0.55 0.50 Mechanical Q value 41±5 55±5 55±5 Curie Temperature, Tc ℃ 184 225 230 Piezoelectric Charge constant, d33 pC/N 810 760 710 Application Sensor Medical ultrasonic probe - Piezoelectric materials for energy harvesting
category unit ECO DM LAB DME Relative Dielectric Constant at 1kHz, K33T 750±20 Dielectric Loss at 1kHz, Tanδ % 3.2 Electro-mechanical coupling Coefficient, kp 0.65 Mechanical Q value 70±5 Curie Temperature, Tc ℃ 370 Piezoelectric Charge constant, d33 pC/N 350 Piezoelectric Charge constant, d31 pC/N -181 Piezoelectric Charge constant, g33 10-3 Vm/N 53 Piezoelectric Charge constant, g31 10-3 Vm/N -27 d33X g33 (Iongitudinal mode FoM) 10-15 (㎡/N) 18,600~21,000 d31X g31 (Transverse mode FoM) 10-15 (㎡/N) -4,960~5,600 Application Energy harvesting Ignitor