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Address: 22A,Dingheng Center Building ,No.45 Fengtai North Road,Beijing,China
Contact name:ChengLihong
Beijing Cheng-cheng Weiye Ultrasonic Science & Technology Co.,Ltd |
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Curling Edge Piezoelectric Ceramic Round Plate Positive and
Negative poles
Piezoelectric ceramic materials are electromechanical transducers: They can convert
mechanical energy into electrical energy and
vice-versa. Piezoelectric ceramic material from us are used in sensors, actuators, gas ignition
and in power transducers for high-power ultrasonic applications.
Piezoelectric ceramic Material are used to convert mechanical parameters, such as
pressure and acceleration, into electrical parameters or,
conversely, to convert electrical signals into mechanical movement
or vibration.
In sensors they make it possible to convert forces, pressures and
accelerations into electrical signals, and in sonic and ultrasonic
transducers to convert electric voltages into vibrations or
deformations.
| Dimension(mm) | Capacity C (pF) | Weak | Strong | Radial | Reso | Thick FrequencyFt (KHz) | Coupling Modulus Kr (%) | Quality Factor Qm | |
| Φ10ｘΦ5ｘ2 | 240±10% | ≤0.5% | ≤1.0% | 153±5% | ≤15 | 1020 | ≥45 | ≥800 | |
| Φ16ｘΦ8ｘ4 | 340±10% | ≤0.5% | ≤1.0% | 95.8±5% | ≤20 | 512 | ≥45 | ≥800 | |
| Φ25ｘΦ10ｘ4 | 935±10% | ≤0.5% | ≤1.0% | 65.5±5% | ≤15 | 512 | ≥45 | ≥800 | |
| Φ30ｘΦ10ｘ5 | 1150±10% | ≤0.5% | ≤1.0% | 58.4±5% | ≤15 | 410 | ≥45 | ≥800 | |
| Φ32ｘΦ15ｘ5 | 1080±10% | ≤0.5% | ≤1.0% | 49.2±5% | ≤15 | 410 | ≥45 | ≥800 | |
| Φ35ｘΦ15ｘ5 | 1430±10% | ≤0.5% | ≤1.0% | 45.5±5% | ≤15 | 410 | ≥45 | ≥800 | |
| Φ38ｘΦ15ｘ5 | 1750±10% | ≤0.5% | ≤1.0% | 43.4±5% | ≤15 | 410 | ≥46 | ≥800 | |
| Φ40ｘΦ15ｘ5 | 1970±10% | ≤0.5% | ≤1.0% | 42.8±5% | ≤15 | 410 | ≥45 | ≥800 | |
| Φ42ｘΦ15ｘ5 | 2200±10% | ≤0.5% | ≤1.0% | 40±5% | ≤15 | 410 | ≥45 | ≥800 | |
| Φ42ｘΦ17ｘ5 | 2110±10% | ≤0.5% | ≤1.0% | 38.8±5% | ≤15 | 410 | ≥45 | ≥800 | |
| Φ45ｘΦ15ｘ5 | 2580±10% | ≤0.5% | ≤1.0% | 38.1±5% | ≤15 | 410 | ≥46 | ≥800 | |
| Φ50ｘΦ17ｘ5 | 3160±10% | ≤0.5% | ≤1.0% | 34.8±5% | ≤15 | 410 | ≥45 | ≥800 | |
| Φ50ｘΦ17ｘ6 | 2430±10% | ≤0.5% | ≤1.0% | 34.8±5% | ≤15 | 315 | ≥45 | ≥800 | |
| Φ50ｘ3 | 5800±10% | ≤0.5% | ≤1.0% | 46±5% | ≤10 | 681 | ≥50 | ≥800 | |
FRQ
1. Reason to the existence of piezoelectricity?
The essential unit which is a rhomboid or cubic shaped cage made up
of atoms exists in some atomic lattice structures. Inside the cell,
the cage is responsible for holding single semi-mobile ion that has
numerous quantum position states. By applying electric field or by
distorting the cage (applied strain), the ions post state will
consequently shift. The basis or transformation to internal
electric field shifts from mechanical strain is provided by
coupling between the cage and central ion.
2. How can poling and depoling in piezoceramic
materials? Be explained?
The piezoceramics should undergo high electric field for a sometime
for the alignment of randomly oriented micro-dipoles in their
proper formulation since the chemical composition is not simply
responsible for the piezoelectric property of ceramics. This is
called “poling” due to alignment resulted from application of high
voltage. a “dislodging stress” is exerted on the micro-dipoles due
to the application of electric field in the opposite direction if
tried. There is only temporary change in polarization if low level
field are applied since it bounces back on removal. There is also
partly degradation of the polarization along with partial loss of
properties when medium fields are applied. Polarization in opposite
direction will be resulted if high fields are applied.
3. Is there a possibility of using piezoceramic actuators at
cryogenic temperatures?
The answer is yes. From down to zero degrees Kelvin, allpiezo
actuators continue to function even though it may appear
counter-intuitive. Since electric fields cannot be changed by
temperature at all and the inter-atomic electric fields are the
basis for the piezoelectric effect, the most common piezoceramics
does decrease due to piezo coupling as temperature drops. Most
importantly the motion of most materials drops to about one-seventh
of that measured at room at liquid helium temperatures.
Company introduction:
Established in 1999, Beijing Cheng-cheng Weiye Science and
Technology Co., Ltd is a professional manufacturer in ultrasonic
transducers, ultrasonic equipment and piezoelectric ceramics.
Notably in 2004, we researched and developed our ultrasonic tubular
transducer equipment into a new product that turns the extreme
inconvenience brought about by pipeline and vacuum cleaning into an
easy task. This product has been widely used in distillation, mix
and mill for various chemical procedures and has received much
praise from our customers.
Payment:
We accept paypal or T/T, western union etc.
Shipping:
Normally if your quantity is not too much, we ship out by Fedex
express economy. Or as your requested by sea or other express,
according to your quantity.
Certification: ø
CE, ISO9001, ROSH
