Céramiques piézoélectriques
Piezoelectric Ceramics
Piezoelectric ceramics are a type of functional ceramic device that uses the piezoelectric effect to convert electrical energy into acoustic energy. Their core materials are ceramic systems such as lead zirconate titanate (PZT) and barium titanate, which are typical piezoelectric ceramic materials widely used in modern piezo devices.
Piezoelectric ceramics undergo polarization to form an oriented dipole structure. When an alternating electric field is applied, the inverse piezoelectric effect generates mechanical vibrations, driving the air medium to generate acoustic waves. These components form the core piezo ceramic element of devices such as ultrasonic transducers and atomizers, and can work similarly to a piezoelectric crystal in converting energy.
Common engineering piezo types include hard compositions such as PZT 4 and soft compositions such as PZT 5H and PZT 5A, which are selected according to application requirements for drive level, sensitivity, and stability. Piezoelectric ceramics come in a variety of forms, including sheets, strips, tubes, piezo discs and piezo ring structures, to meet the needs of diverse applications, including ultrasonic probes, piezoelectric atomizer modules, and medical or industrial nebulization devices. For users wondering what is piezo crystal, these engineered ceramic compositions provide similar piezoelectric effects but with higher design flexibility and better batch consistency than natural crystals.
Série céramique piézoélectrique
Piezoelectric
Ceramics
Core components such as ultrasonic sensor probes, ultrasonic cleaner transducers, buzzers, and piezoelectric ceramic atomizers, etc.
Piezo Ceramic
Atomizers
Core components of medical nebulizers, humidifiers, essential oil diffusers, and beauty devices, etc.
Atomizer Driver
Boards
Supports customization of various PCB dimensions, power supply and signal output interfaces, and power, etc.
Céramiques piézoélectriques
Piezoelectric ceramics offer a variety of substrate forms from sheets, strips, and blocks to columns, rings, and precision piezo discs. Formulations, polarization, and dimensional tolerances can be customized according to application requirements to achieve target frequencies, driving forces, or sensitivity. Whether you need a single piezo ceramic element, an array based on piezoelectric crystal behavior, or a matched stack for a piezoelectric atomizer, we can provide tailored solutions. Suitable for ultrasonic transduction, sensing and measurement, ultrasonic cleaning, atomizing sheets, buzzer alerts, energy harvesting, and other fields, and supports various electrode and assembly methods to meet different stages of R&D verification and large-scale production.
Piezoelectric Ceramic Atomizes
Piezoelectric ceramic atomizing sheets are highly standardized components. Through combinations of orifice diameter, thickness, and size, the atomization volume and droplet size can be precisely controlled, covering home aromatherapy, humidification, beauty care, and customized devices. For different media and applications, versions with reflux holes, versions with anti-corrosion silicone rings, and versions specifically designed for certain models are available to help quickly achieve a balance between high atomization volume, fine particles, and high reliability. Many solutions use PZT‑based piezo discs as the vibrating core, forming a compact pzt atomizer assembly.
Since the mist maker sheet is a passive piezoelectric element, it cannot run by itself and must be used together with a properly matched atomizing board / atomizing PCB. Depending on the application, these assemblies realize complete piezoelectric atomizer or piezoelectric nebulizer systems for medical, consumer, or industrial use.
Piezoelectric Ceramic Atomizer Driver Boards
The atomizer driver circuit board is a high‑frequency driver platform that can be flexibly customized. Starting from the required atomization volume, particle size, supply voltage, and mechanical structure, we match and optimize the frequency, output power, and control mode for different atomizers. Whether driving a compact piezoelectric ceramic mist module or a medical‑grade piezoelectric nebulizer head, the customized circuit provides fine control over resonance conditions.
By combining soft‑start and multiple protection mechanisms (such as over‑current, over‑temperature, and open‑load protection), the driver board maintains stable output while reducing the risk of overheating and failure, making it suitable for rapid mass production in aromatherapy humidification, beauty care, and various customized atomization devices. In most applications, the customized driver can be mounted directly in the customer’s atomizer or aroma diffuser as a ready‑to‑use piezoelectric atomizer solution. When needed, its design can also be migrated into a dedicated atomizing board or atomizing PCB, using advanced piezoelectric ceramic materials such as PZT 4, PZT 5H, or PZT 5A and tailored to the customer’s specific design.
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Questions fréquemment posées
Piezoelectric ceramics are functional ceramic materials that convert mechanical energy and electrical energy into each other.
When they are subjected to mechanical actions such as pressure, bending, or vibration, they generate electrical charge or voltage across their electrodes; when a voltage is applied, they undergo slight mechanical deformation and vibrate.
This reversible piezoelectric effect allows them to function both as sensors, converting forces, pressure, or sound into electrical signals, and as actuators or ultrasonic transducers, turning electrical signals into mechanical vibration or sound.
In practical engineering and product design, what people often call “piezo crystal” usually does not refer to natural single crystals like quartz, but rather to piezoelectric ceramics based on PZT (lead zirconate titanate). These ceramics are easy to mass‑produce and process into various shapes—such as discs, rings, cantilever beams, and atomizing plates—and are therefore widely used in sensors, buzzers, ultrasonic cleaning and atomization devices, as well as vibration energy harvesting in industrial, medical, and consumer electronics applications.
The manufacturing process of piezoelectric ceramic components requires a series of precisely controlled steps to achieve stable piezoelectric properties. The main process flow includes the following stages:
Raw Material Preparation: Ferroelectric compound powders are precisely weighed and mixed according to a specific chemical formula. Common piezoelectric ceramic materials include lead zirconate titanate (PZT) or lead-free alternatives. These engineered ceramics behave similarly to a piezoelectric crystal, but offer more flexible composition adjustment compared with natural crystals.
Pre-firing (Calcination): The mixed powder is heated at a high temperature (typically 800–1000℃) to induce a solid-state reaction and form the desired crystalline phase, ensuring uniform composition and a complete reaction.
Shaping and Sintering: The ground pre-firing powder is pressed into discs, rings, or custom shapes—such as piezo discs, piezo ring structures, blocks and other piezo ceramic element forms—and then sintered at a high temperature (approximately 1200–1300℃) to form a dense, robust ceramic structure with low porosity. Different PZT formulations such as PZT 4, PZT 5H, and PZT 5A are chosen to match different piezo types in terms of mechanical quality factor, dielectric constant, and coupling factor.
Electrode Preparation: A layer of metal electrodes (such as silver, nickel, or gold) is coated onto the ceramic surface for electrical performance testing or subsequent assembly. These electrodes turn the ceramic body into a usable piezoelectric crystal-like transducer element.
Polarization Treatment (Directional Polarization): A strong DC electric field is applied to the ceramic while it is heated, causing the internal electric dipoles to align in the same direction, thus endowing the material with permanent piezoelectric properties. This step essentially transforms the sintered ceramic into an active piezoelectric ceramic transducer.
Post-processing and Inspection: After cooling, performance testing, and quality screening, the polarized ceramic can be cut, packaged, or assembled as needed for manufacturing ultrasonic transducers, sensors, actuators, mist maker sheet atomizers, piezoelectric atomizer heads, piezoelectric nebulizer modules, and other devices.
In short, the preparation process of piezoelectric ceramics integrates precise composition control, heat treatment processes, and polarization technology, ultimately transforming ordinary powder into high-performance functional materials with excellent energy conversion capabilities, widely used in sensors, ultrasonic equipment, medical instruments, and industrial control systems. For users asking what is piezo crystal, these engineered PZT ceramics are the industry-standard answer, providing controlled and repeatable piezoelectric performance across many piezo types and form factors.
Piezoelectric ceramics, due to their ability to convert mechanical energy into electrical energy, are widely used in various sensing, driving, and energy conversion devices, making them a key functional material in modern electronic and electromechanical systems. Modern piezoelectric ceramic materials such as PZT 4, PZT 5H, and PZT 5A allow designers to select from different piezo types for high‑power, high‑sensitivity, or low‑loss applications.
Main application areas include:
Ultrasonic transducers and sensors: Piezoelectric ceramic elements can emit and receive ultrasonic waves, used for distance, flow rate, and thickness measurement. Typical forms include piezo discs, piezo ring arrays, and custom blocks that function like engineered piezoelectric crystal transducers.
Actuators and buzzers: When a voltage is applied, the ceramic undergoes minute deformation, which can be used to generate sound in electronic buzzers or in precision positioning systems, inkjet printers, and other devices requiring micro-displacement control. Different PZT compositions (e.g., PZT 4, PZT 5H, PZT 5A) are combined with various piezo ceramic element geometries to achieve the desired stroke and force.
Ultrasonic cleaners: Piezoelectric ceramics generate high-frequency vibrations in liquids, creating a cavitation effect that removes dirt from device surfaces, used for cleaning metal parts, optical components, and medical devices. These typically use high‑power piezo discs or piezo ring stacks.
Atomizing plates and spray devices: Liquids are atomized through ultrasonic vibration, used in humidifiers, aromatherapy diffusers, and medical atomization equipment to achieve efficient and fine spray effects. This category includes mist maker sheet modules, integrated pzt atomizer heads, and medical piezoelectric nebulizer assemblies, which are usually driven by a dedicated atomizing board or atomizing PCB and built around thin piezoelectric ceramic plates.
Energy Harvesting Devices: Piezoelectric ceramics can capture environmental vibrations or mechanical stress and convert them into electrical energy, used to power small electronic devices or extend sensor lifespan. These harvesters often use slender piezoelectric ceramic beams or compact piezo discs made from tailored PZT materials.
In summary, piezoelectric ceramics and related piezoelectric ceramic materials play a central role in modern sensing, actuation, acoustics, and energy conversion systems. With tunable compositions such as PZT 4, PZT 5H, and PZT 5A and flexible geometries including piezo discs, piezo rings, beams, and custom atomizing plates, they provide reliable, mass‑producible solutions for industrial automation, medical devices, and consumer electronics.
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