PZT-5 piezoelectric ceramic element
The piezoelectric phenomenon is the Curie brothers 100 years ago when the study of quartz found. So, what is the piezoelectric effect it? When you ignite the gas stove or water heater, there is a piezoelectric ceramic has quietly serve you again. Manufacturer in such a piezoelectric ignition means hidden piezoceramic, when the user presses the spring of the ignition device, the drive pressure is applied to the PZT-5 piezoelectric ceramic put on, it produces a very high voltage, and thus the energy toward the gas outlet discharge. So, it was a spark ignited the gas. This function of the piezoelectric ceramic is called the piezoelectric effect.
Principle of the piezoelectric effect is that if pressure is applied to the piezoelectric material, and it will generate a potential difference (called piezoelectric effect), whereas the voltage is applied, the mechanical stress (known as the inverse piezoelectric effect). If the pressure is a high frequency vibration, the high frequency current is generated. While the high-frequency electrical signal applied to the piezoelectric ceramic, high-frequency acoustic signal is generated (mechanical shock), which is what we usually call the ultrasound signal. That is, the piezoelectric ceramic having a function of conversion and reverse conversion between mechanical energy and electrical energy, this reciprocal relationship is indeed very interesting.
Due to mechanical deformation of the piezoelectric material generates an electric field can also be due to an electric field to produce mechanical deformation, this inherent machine - electric coupling effect makes piezoelectric materials have been widely used in engineering. For example, piezoelectric materials have been used to make intelligent structure, such structure in addition to a self-carrying capacity, but also has a self-diagnosis, self-adaptive and self-repair and other functions, plays an important role in future aircraft design.
The piezoelectric ceramic components of modern electronic technology is an important part of the field indispensable, it is in modern communications, radar
, Sonar, automatic measurement and control, ultrasonic transducers, igniting detonated, ultrasonic sterilization, ultrasonic power and other aspects have received wide
Pan applications. Now China has developed in the field of piezoelectric ceramic materials and their applications are still in the development stage, the development of this industry
Will have broad prospects.
