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Piezoelectric Ceramics

With the rapid development of high technologies, piezoelectric ceramic (special inorganic non-metallic material) is more and more popular in a variety of applications. As an ultrasonic transducer manufacturing expert, CHENGCHENG WEIYE never stops extending piezoelectric ceramic element's applications, bringing it from high technology field into our daily life to better serve us.

Piezoelectric ceramic is mainly used to make ultrasonic transducer, due to its powerful ability to convert electric energy into ultrasonic vibration, which excels in detecting fish shoal’s location and shape, and conducting nondestructive inspection for metal. Besides, piezoelectric ceramic wafer is an ideal material for ultrasonic cleaner, medical ultrasonic equipment, and ultrasonic manufacturing equipment for processing plastics and even metals, like ultrasonic cutting machine, ultrasonic welding machine and ultrasonic soldering iron.

We are able to supply all kinds of piezoelectric ceramic materials, like piezoelectric ceramics for transducer, piezoelectric ceramics for cleaner, piezoelectric ceramics for reversing radar, piezoelectric ceramics for atomizer, etc.

The piezoelectric ceramics we provide are more reliable and durable. Catering to different industries, we have the following plans:
1. Thanks to its low heat dissipation and high electro-acoustic conversion efficiency, P8 material is applicable for military industry. Besides, due to its non-fragile property, P8 material is a great choice for welding, cleaning and other industries. It has been well received by French ACTEON, American Blackstone and other companies.
2. P4 is ideal for ultrasonic atomizer industry.
3. P5 is applicable for detection industry.

Note
1. Because silver surface of the piezoelectric ceramics could get easily oxidized, it is a must to properly seal them before use and immediately use them after unsealing.
2. Please always handle with care.

Piezoelectric Ceramics Properties

Property Parameter Symbol Indicator Tolerance
P-33 P-41 P-42 P-44 P-51 P-52 P-53 P-61 P-81
Electrome-chanical coupling coefficient Kp 0.6 0.56 0.58 0.6 0.65 0.64 0.68 0.53 0.53 ±6.0%
K31 0.36 0.33 0.34 0.36 0.38 0.37 0.33 0.3 0.31
K33 0.7 0.66 0.67 0.7 0.74 0.76 0.76   0.63
K15 0.7 0.66 0.67 0.7 0.72 0.75 0.76 0.61 0.66
Kt 0.47 0.48 0.48 0.48 0.5 0.49 0.55 0.47 0.47
Relative permittivity ε T 1725 1050 1275 1350 2100 3250 3000 1100 1025 ±12.5%
r 3
 
ε T 1725 1450 1700 1900 2400 3500 4100 1100 1400
r 1
 
Dielectric loss factor tgδ 0.02 0.005 0.006 0.005 0.02 0.02 0.02 0.008 0.004
Elastic compliance constant (*10-12m2/N) S E 15 12 11.5 13 15 15.5 15   11 ±10%
11
 
S D 9 8.5 8 8.5 9 9 8.8   8.5
33
 
S D 25 21 21 21.5 22 23 22   21
55
 
Piezoelectric strain constant (*10-12m/v or C/N) d31 160 -110 -130 -150 -210 -260 -270   -100 ±12.5%
d33 390 250 290 320 450 575 590   225
d15 480 460 500 530 710 950 1050   450
Mechanical quality factor Qm 75 500 500 400 70 65 65 800 800
Frequency constant (Hz·m) Nd 1950 2250 2200 2200 2000 1940 1950 2350 2300 ±5%
N1 1470 1650 1700 1600 1450 1450 1480 1700 1700
N3 1880 1950 2050 2000 1900 1900 1900   1960
N5 1130 1230 1230 1230 1200 1200 1200 1300 1230
Nt 2250 2270 2300 2300 2250 2300 2300 2300 2280
Velocity (m/s) Vt 3000 3460 3500 3300 3000 3010 3040   3500 ±5%
V1 2940 3300 3400 3200 2900 2900 2900   3400
V3 3760 3900 4100 4000 3800 3800 3800   3920
V5 2260 2460 2460 2460 2400 2400 2400   2460
Vt 4500 4540 4600 4600 4500 4600 4700   4560
Curie temperature (℃) Tc 335 310 300 300 260 180 200 320 300
Aging rate ( % / time decade) ANd 0.2 1.3 1.3 1.2 0.35 0.35 1.3 0.1 1.3  
AKp -0.25 -2.5 -2 -1.8 -0.4 -0.25 -1.7 0.5 -2
-1.5 -4.5 -4.5 -4 -1.5 -2 -3.8 0.8 -4
Temperature Stability (% change from -10℃- 50℃ , benchmark: 25 ℃ ) ΔNd/N 1 1 1.5 1 1.5 2 2 0.35 1.5  
Δε/ε 15 9.5 9.5 9 20 40 40   9  
Strong field of dielectric properties ( T=25℃ E=400V) tgδ   0.04 0.04 0.04         0.01
Δε/ε   0.18 0.2 0.17         0.06
Note: All the property parameters expect the Curie temperature and density are measured ten days after polarization.
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