Piezoelectric ceramics applications

Voice converter is one of the most common applications. Piezoelectric ceramics can be used as ultrasonic sound transducers such as pickups, microphones, headphones, buzzers, ultrasonic sounders, sonar, and ultrasonic flaw detectors of materials. For example, a buzzer on a children ’s toy is a current that generates vibration through the inverse piezoelectric effect of piezoelectric ceramics, and emits a sound that can be heard by the human ear. Piezoelectric ceramics can generate vibrations of different frequencies through the control of electronic circuits, thus producing a variety of different sounds. For example, electronic music greeting cards convert AC audio signals into sound signals through the inverse piezoelectric effect .

 They are piezoelectric detonator since the British invented the tank in the First World War and used it for the first time in the battle of the Somme in France to invade the German army, the tank has shown its talent in many battles. However, in the 1960s and 1970s, due to the invention of anti-tank weapons, the tank lost its former glory. The armor-piercing projectile fired by the anti-tank gun touched the tank and immediately exploded, smashing the tank. This is because the warhead is equipped with piezoelectric ceramics, which can transform the powerful mechanical force at the time of collision into an instantaneous high voltage, bursting sparks and detonating explosives.

 Piezoelectric lighter. A new type of electronic lighter used on the gas stove is made of piezoelectric ceramics. As long as you press the ignition button with your finger, the piezoelectric ceramic on the lighter can generate a high voltage, form an electric spark and ignite the gas, which can be used for a long time. Therefore, the piezoelectric lighter is not only easy to use, safe and reliable, but also has a long life. For example, a lighter made of lead titanate piezoelectric ceramics can be used more than 1 million times.

After the nuclear tester in the anti-nuclear goggles puts on the goggles made of transparent piezoelectric ceramics, when the optical radiation of piezo disk piezoelectric transducer generated by the nuclear explosion reaches a dangerous level, the piezoelectric ceramics in the goggles transform it into an instantaneous high pressure electricity, in 1/1000 s, can reduce the light intensity to only 1/10000, and when the dangerous light disappears, it can return to its original state. This goggles has a simple structure and weighs only a few tens of grams, so it is very convenient to install and carry on the anti-nuclear goggles.

Piezoceramic ring componnet is suitable for ultrasonic welding equipment and ultrasonic cleaning equipment. It is mainly made of high-power emission piezoelectric ceramics. Ultrasonic transducer is a device that can convert high-frequency electrical energy into mechanical energy. Ultrasonic transducer As an energy conversion device, its function is to convert the input electric power into mechanical power (ie ultrasonic) and then transmit it, while it consumes a small part of its own power.

Sonar In submarine warfare, the most difficult thing to deal with is the submarine. It can snorkel under the sea for a long time. It sneaks into ports and ships without knowing it. How to find enemy submarines? It is not possible to rely on the eyes, nor to use radar, because electromagnetic waves of piezoceramic cylinder tube will attenuate sharply in the seawater, and cannot effectively transmit signals. The detection submarine relies on sonar, underwater ears. Piezoelectric ceramics are the materials used to make sonars. They emit ultrasonic waves, reflect back when they encounter submarines, and are processed after being received to measure the position and distance of enemy submarines.