High Anisotropy Piezoceramic Materials
PCT-21, PCT-22
ELPA Company develops and produces high anisotropy piezoceramic materials PCT-21 and PCT-22. These materials are modified lead-calcium titanate. They can be used in sensors of ultrasonic defectoscopes and in medical diagnostic ultrasonic devices operating in frequency range from 0.5 MHz to 25 MHz.
ESSENTIAL CHARACTERISTICS
Characteristic
Symbol
PCT-21
PCT-22
Curie point (oC), min ° C, min
TK
200-220
225-240
Piezoelectric modules (C/N)
d33 х10-12
90 - 100
85-95
d31 х10-12
-15...- 20
-12...- 16
dV х10-12
60 - 65
-
Piezo elecric voltage coefficients (V m/N)
g33 х10-4
260 - 290
-
g31 х10-4
-40...- 50
-
gV х10-4
175 - 195
-
Electromechanical coupling coefficients
кР
0,13 - 0,16
0.12-0.16
kt
0.48- 0.53
0.48-0.53
k33
0.49- 0,54
0.49-0.54
Permittivity
eT33/e0
390 – 440
300-360
Dielectric dissipation
tg d %
1,8 – 2,5
1.6-2.6
Sound velocity (m/s х103)
v D t
4,96 - 5,16
4.96-5.16
Mechanical (antiresonanсe) Q of thickness mode oscillations
Qta
100 – 200
100-200
Electrical strength (V/m), min
Est х106
7.0
7.0
Density, kg/m3 х103
r
6.95 - 7.00
6.9-7.1
ON PURCHASE +7 495 530 00 31 and
535 26 90 fax +7 495 534 22 67 or info@elpapiezo.ru or order directly from here.
