- Ultrasonic Transducers
Formerly Etalon - Piezo Technologies
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Piezo Tech is ISO 9001:2000 Certified. Certification No. C2006-02533.
Home > Advanced Piezoelectrics > Product Overview
Piezoelectric Product Overview
Custom High-Performance Piezoelectrics for Medical and Industrial Applications
Select material types from the links below for specific product information. For more detailed product information, please view our Materials Chart.
- Mod. Bismuth Titanate
- Mod. Lead Metaniobate
- Mod. Lead Zirconate Titanate
- Mod. Lead Titanate
- Composites
Modified Bismuth Titanate
Piezo Technologies manufactures modified bismuth titanate piezoelectric ceramic. Developed for high temperature applications, our modified bismuth titanate has an unusually high Curie temperature coupled with extremely stable piezoelectric activity over the entire temperature range. Frequently used in ultra high temperature accelerometers, pressure, knock, flow and NDT transducers.
| PHYSICAL PROPERTIES COMPARISON | |||||
| Note: The above values are nominal. | |||||
| Free Dielectric Constant | Piezoelectric Strain Constant | Curie Temperature | Mechanical Q (Thickness) | Thickness Frequency Constant Hz-m (kHz-in) |
|
|---|---|---|---|---|---|
| Material | Kt33 | d33 | Tc | Qm | Nt |
| K-12 | 145 | ≥12 | 820 | 200 | 2260 (89) |
| K-15 | 145 | ≥18 | >600 | 100 | 2080 (82) |
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Modified Lead Metaniobate
Piezo Technologies manufactures modified lead metaniobate piezoelectric ceramic for use in non-destructive testing transducers. Modified lead metaniobates have a low aging characteristics and low mechanical Q. They also have a highly stable dielectric constant with variations of temperature and pressure, and low acoustic impedance. Frequently used in ultrasonic transducers, NDT and medical imaging. In addition, K-81 offers broad bandwidth, deep water and high temperature capabilities when this is desired.
| PHYSICAL PROPERTIES COMPARISON | |||||
| Note: The above values are nominal. | |||||
| Free Dielectric Constant | Piezoelectric Strain Constant | Curie Temperature | Mechanical Q (Thickness) | Thickness Frequency Constant Hz-m (kHz-in) |
|
|---|---|---|---|---|---|
| Material | Kt33 | d33 | Tc | Qm | Nt |
| K-81 | 300 | 85 | 400 | <15 | 1525 (60) |
| K-83 | 180 | 60 | 200 | 650 | 2740 (108) |
| K-85 | 800 | 180 | 300 | <15 | 1675 (66) |
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Modified Lead Zirconate Titanate
Piezo Technologies manufactures modified lead zirconate titanate ceramics with high shear coupling coefficient, low permittivity, and high temperature stability. Modified lead zirconate titanate material is used in a alrge variety of high frequency shear resonance applications. Common uses include ultrasonic cleaning, welding and sonar, high voltage generators, medical therapy, HIFU, hydrophones, accelerometers, levels, acoustic emission, pressure, flow, NDT medical, air shear, knock, sonar, and igniter transducers. More in-depth applications are described on individual material pages.
| PHYSICAL PROPERTIES COMPARISON | |||||
| Note: The above values are nominal. | |||||
| Free Dielectric Constant | Piezoelectric Strain Constant | Curie Temperature | Mechanical Q (Thickness) | Thickness Frequency Constant Hz-m (kHz-in) |
|
|---|---|---|---|---|---|
| Material | Kt33 | d33 | Tc | Qm | Nt |
| K-180 | 425 | 180 | 350 | 200 | 2005 (79) |
| K-181 | 380 | 150 | 360 | 220 | 2080 (82) |
| K-182 | 540 | 180 | 330 | 200 | 2180 (86) |
| K-270 | 1300 | 270 | 325 | <200 | 2030 (80) |
| K-278 | 1100 | 240 | 300 | 200 | 2030 (80) |
| K-300 | 1450 | 350 | 300 | 400 | 2080 (82) |
| K-350 | 1700 | 380 | 360 | 75 | 1980 (78) |
| K-500 | 2700 | 500 | 245 | 70 | 2006 (79) |
| K-600 | 3100 | 600 | 230 | 50 | 2006 (79) |
| K-700 | 4000 | 700 | 210 | 30 | 2006 (79) |
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Modified Lead Titanate
Piezo Technologies' lead titanate piezoelectric ceramic has a high ratio of k33 to kp with a high kt. A finer grain structure makes it more suitable for higher frequency applications. Frequent applications inlude high frequency range transducers, use in medical imaging, therapy, HIFU, and NDT.
| PHYSICAL PROPERTIES | |||||
| Note: The above values are nominal. | |||||
| Free Dielectric Constant | Piezoelectric Strain Constant | Curie Temperature | Mechanical Q (Thickness) | Thickness Frequency Constant Hz-m (kHz-in) |
|
|---|---|---|---|---|---|
| Material | Kt33 | d33 | Tc | Qm | Nt |
| NOVA 3B | 215 | 70 | 350 | 300 | 2135 (84) |
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Composites
PZT/polymer piezoelectric ceramic composites for non-destructive testing, medical transducers, and research. Any type of PZT can be chosen as the active ceramic, depending on the application. Composites offer very low mechanical quality factors, low acoustic impedance, and high electromechanical coupling factors. Frequent applications include use in flaw detectors, thickness gages, and medical imaging.
| PHYSICAL PROPERTIES | |||||
| Note: The above values are nominal. | |||||
| Free Dielectric Constant | Piezoelectric Strain Constant | Curie Temperature | Mechanical Q (Thickness) | Thickness Frequency Constant Hz-m (kHz-in) |
|
|---|---|---|---|---|---|
| Material | Kt33 | d33 | Tc | Qm | Nt |
| Composite | 900 to 2000 | 300 to 650 | 150 to 350 | 2 to 30 | 1385 to 1525 (54 to 60) |
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The data listed in these charts is for some common configurations, but Piezo Technologies is not limited to the figures and ranges shown. Ask us about your unique needs here.
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