piezoelectric ceramic for ultrasonic transducer_Beijing Cheng-cheng Weiye Science & Technology Co.,Ltd

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piezoelectric ceramic for ultrasonic transducer

PZT Piezo Ceramic

Piezoelectric History

Piezoelectric ceramics is an ability to convert between mechanical energy and power functions of ceramic materials. Piezoelectric effect is that certain media in the under mechanical stress, even if this kind of pressure as small as tiny vibrations like sound waves, will have a shape such as compression or elongation of the changes caused by the surface of live media, which is a positive piezoelectric effect. On the contrary, the imposition incentives electric field, media will have a mechanical deformation, saying the inverse piezoelectric effect.

1880 French Curie brothers discovered the "piezoelectric effect." In 1942, the first piezoelectric ceramic materials - barium titanate in the U.S., former Soviet Union and Japan made. In 1947, barium titanate pickups - the first piezoelectric ceramic device was born. The early 50s, but also a performance far superior to barium titanate piezoelectric ceramic materials - lead zirconate titanate developed. Since then, the development of piezoelectric ceramics has entered a new stage. 60's to 70's, piezoelectric ceramics continue to improve, by trend perfectly. Using a variety of elements such as the improved binary system of lead zirconate titanate piezoelectric ceramics, in order to lead zirconate titanate-based ternary, quaternary piezoelectric ceramics have also emerged. Excellent performance of these materials, manufacturing simple, low cost, wide range of applications.

Since the late '80s, it developed relaxor ferroelectric ceramic materials, on this basis, developed a successful relaxation ferroelectric single crystal materials, in order to lay the foundation for three-dimensional ultrasound imaging. At present, people will nanotechnology applied to the piezoelectric material of the production process has been to achieve new breakthroughs.

At present, the world is being vigorously developed lead-free piezoelectric ceramics, in order to protect the environment and the pursuit of health, is expected to form after the 2008 industrial production.

F-PZT-51PZT5 piezoelectric ceramic material of soft material.

Dimensions (mm)	Capacity C(pF)	Weak field dissipation Tgδ (12v)	Radial frequency Fr (KHz)	Resonance impedance Zm (∩)	Coupling modulus Kp (%)
Φ8ｘΦ3ｘ2	370±15%	≤2.0%	175±5%	≤250	≥45
Φ10ｘΦ5ｘ2	450±15%	≤2.0%	128±5%	≤250	≥45
Φ15ｘΦ8ｘ3	730±15%	≤2.0%	82.5±5%	≤300	≥45
Φ24ｘΦ14ｘ3	1620±15%	≤2.0%	50.5±5%	≤250	≥45
Φ30ｘΦ10ｘ5	3250±15%	≤2.0%	47.5±5%	≤250	≥45
Φ32ｘΦ15ｘ5	2200±15%	≤2.0%	40.8±5%	≤250	≥45
Φ35ｘΦ15ｘ5	2650±15%	≤2.0%	38.5±5%	≤200	≥45
Φ38ｘΦ15ｘ5	3380±15%	≤2.0%	36.2±5%	≤180	≥45
Φ40ｘΦ15ｘ5	3750±15%	≤2.0%	35.0±5%	≤150	≥45
Φ45ｘΦ15ｘ5	4950±15%	≤2.0%	36.5±5%	≤120	≥45
Φ50ｘΦ17ｘ5	6080±15%	≤2.0%	28.5±5%	≤120	≥45
Φ50ｘ3	12000±15%	≤2.0%	38.5±5%	≤80	≥62