Piezo Ceramic Ring Ceramic Capacitor For Ultrasonic Sensor

Piezo Ceramic Ring ceramic capacitor For Ultrasonic Sensor

Description：

Piezoelectric ceramics are functional ceramic materials that can convert mechanical energy and electrical energy into each other. The so-called piezoelectric effect means that when some medium is subjected to mechanical pressure, even if the pressure is as small as sound wave vibration, it will produce shape changes such as compression or elongation, causing the surface of the medium to be charged, which is the positive piezoelectric effect. On the contrary, when the excitation electric field is applied, the medium will produce mechanical deformation, which is called the inverse piezoelectric effect.

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Commonly used piezoelectric ceramics include barium titanate, lead zirconate titanate binary system, and the addition of a third ABO3 (A means divalent metal ion, B means tetravalent metal ion or the sum of several ions is positive four) in the binary system. Valence) type compounds, such as: ternary system composed of Pb (Mn1/3Nb2/3) O3 and Pb (Co1/3Nb2/3) O3. If a fourth or more compound is added to the ternary system, a quaternary system or a multi-component piezoelectric ceramic can be formed. In addition, there is also a metaniobate piezoelectric ceramics, such as potassium sodium metaniobate (Na0.5·K0.5·NbO3) and barium strontium metaniobate (Bax·Sr1-x·Nb2O5), etc. Contains toxic lead, which is good for the environment

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