Technical Specifications for Custom Piezo Ceramics
Hard PZT Materials
Focus: High-Power, Stability & Sonar Applications:
Hard PZT ceramics, such as PZT-4 and PZT-8, are engineered for high-power ultrasonic applications where low dielectric loss and high mechanical stability are critical. These materials are the industry standard for Sonar transducers, industrial welding, and ultrasonic cleaning, offering reliable performance under high repetitive mechanical stress and high voltage driving conditions."
Piezoelectric Ceramics for High-Power Applications
Hard PZT materials (P4 and P8 series) are engineered for applications requiring high mechanical power and minimal heat generation. These ceramics are characterized by a high mechanical quality factor (Qm) and low dielectric loss (tan delta), which significantly reduces energy dissipation during continuous operation.
For sonar applications, ultrasonic cleaning, and welding, the stability of the d33 charge constant under high electrical loads is critical. The P4 series provides an excellent balance between coupling and stability, while the P8 series is the preferred choice for extreme power applications where thermal stability is the deciding factor for system reliability and longevity.
| Property | Symbol | P41 (PZT-4) | P81 (PZT-8) |
|---|---|---|---|
| Coupling Coefficient | k33 | 0.68 | 0.68 |
| Dielectric Constant | εr33 | 1100 | 1050 |
| Dielectric Loss | tg δ | 0.004 | 0.003 |
| Mechanical Quality | Qm | 1000 | 1300 |
| Curie Point (°C) | Tc | 320 | 310 |
Soft PZT Materials: High-Sensitivity & Precision Sensing
Soft PZT materials, such as PZT-5A and PZT-5H, are characterized by high piezoelectric charge constants (d33) and high coupling coefficients. This makes them ideal for sensitive medical ultrasound, hydrophones, and precision industrial sensors. When your application requires maximum sensitivity and large displacements at moderate temperatures, Soft PZT is the optimal choice.
Compared to Hard PZT, these materials feature a higher dielectric constant and higher sensitivity, which is essential for detecting weak signals in ultrasonic imaging and flow metering. The P51 (5A) series offers excellent time stability and high Curie points for general sensing, while the P52 (5H) series is optimized for maximum charge output and capacitance in specialized actuators and high-resolution transducers.
| Property | Symbol | P51 (PZT-5A) | P52 (PZT-5H) |
|---|---|---|---|
| Coupling Coefficient | k33 | 0.76 | 0.75 |
| Dielectric Constant | εr33 | 2500 | 3500 |
| Piezo Charge (pC/N) | d33 | 550 | 700 |
| Mechanical Quality | Qm | 80 | 65 |
| Curie Point (°C) | Tc | 290 | 210 |
Lead-Free Piezo Ceramics: RoHS Compliant Engineering
As global regulations tighten, RoHS compliant lead-free piezo ceramics are becoming essential for consumer electronics and environmentally conscious projects. While historically a challenge to match PZT performance, our lead-free materials offer a sustainable alternative for sensing and actuation without compromising on regulatory requirements or ESG goals.
Our lead-free compositions are designed for applications where environmental certification is as critical as performance. These materials are particularly suited for consumer-grade sensors and medical devices that require biocompatibility and non-toxic components. We focus on providing stable dielectric properties that allow for a seamless transition from lead-based ceramics in low-to-medium power applications.
| Property | Symbol | KNN-15 | KNN-1 |
|---|---|---|---|
| Coupling Coefficient | k33 | 0.55 | 0.45 |
| Dielectric Constant | εr33 | 1600 | 600 |
| Piezo Charge (pC/N) | d33 | 260 | 130 |
| Density (g/cm³) | ρ | 4.50 | 4.35 |
| Curie Point (°C) | Tc | 330 | 400 |
PT Materials (Lead Titanate): High-Frequency & Temperature
Specialized Lead Titanate (PT) materials are designed for extreme environments. With a high Curie point and excellent frequency stability, PT ceramics excel in high-temperature sensors and high-frequency ultrasonic NDT (Non-Destructive Testing). Their unique properties provide superior thickness-mode resonance while suppressing unwanted radial modes.
PT materials like the PT-71 series are the preferred choice when standard PZT reaches its thermal limits. They offer a very low dielectric constant and a high degree of anisotropy (high kt/kp ratio), which is vital for high-resolution ultrasonic probes. This ensures a clean signal with minimal interference from secondary vibrations, even at temperatures exceeding 300 degrees Celsius.
| Property | Symbol | PT-71 | PT-72 |
|---|---|---|---|
| Coupling Coefficient | kt | 0.50 | 0.37 |
| Dielectric Constant | εr33 | 190 | 300 |
| Mechanical Quality | Qm | 1000 | 1200 |
| Density (g/cm³) | ρ | 6.70 | 6.60 |
| Curie Point (°C) | Tc | 330 | 310 |
Multilayer Piezo Technology: Low-Voltage Precision
Our Multilayer PZT series enables sub-nanometer precision at low operating voltages (10-100V). By stacking ultrathin ceramic layers, we achieve high field strength and rapid response times in a compact footprint. This technology is the premier choice for micro-positioning, laser tuning, and advanced valve control where energy efficiency and space are at a premium.
The multilayer architecture consists of alternating ceramic sheets (20 micrometers) and internal electrodes (2 micrometers), co-fired into a monolithic block. This design significantly increases the force-to-voltage ratio, allowing for high-speed actuation without the need for high-voltage power supplies. Each stack is equipped with integrated ceramic protection layers to ensure long-term durability in demanding industrial environments.
High-Precision Manufacturing &
Narrow tolerances
We specialize in the production of small-scale piezoelectric components where dimensional accuracy is critical.
Our manufacturing process is optimized for custom shapes, including discs, rings, and tubes, tailored to your specific hardware design.
By focusing on narrow tolerances, we ensure that each component integrates seamlessly into high-end acoustic systems and medical probes.
From Simulation to Prototype
The Path to Optimal Resonance
Our core competence is bridging the gap between raw material data and real-world performance through advanced simulation.
Instead of relying on trial-and-error, we can simulate the resonance frequency of your component based on its intended dimensions.
Based on these simulations, we can suggest dimensional adjustments to ensure your target frequency is met with maximum efficiency.
