ELPA Company develops and produces pies ceramic porous materials of 3-0 connectivity type.
These materials are used for making components for ultrasonic defectoscopes, thickness gauges, medical diagnostic and therapeutic ultrasonic equipment, vibrating measuring instruments and hydroacoustic devices.
Porous piezoceramic is design to operate in a wide temperature range. As compared with ordinary ceramics it has an optimum set of electrophysical characteristics important for above applications.
COMPARATIVE CHARACTERISTICS OF MATERIALS
Characteristic
Simbol, Unit
PZT-19
PZT-19P
PZT-36
PZT-36P
PBZT-8
PBZT-8P
Porosity
%
usual
23÷26
usual
23÷26
usual
23÷26
εt33/ε0
1869
1155
700
462
1392
810
Loss tangent
tg δ, %
1.68
2.11
2.52
2.80
0.23
0,26
Electromechanic coupling coefficients
Thickness mode, kt
0.523
0.530
0.547
0.534
0.531
0,517
Planar mode, kp max
0.550
0.327
0.555
0,328
0,573
0,350
Relationship
kt ⁄ kp
0,950
1,621
0,986
1.628
0.927
1,477
Piezoelectric modules
transverse mode, d31,10-12 C/N
175
103
107
59
127
86
longitudinal mode, d33, 10-12 C/N
494
469
221
176
329
342
Sound velocity
V Dt, 103 m⁄c
4.47
3.01
4.78
3.21
4,58
3.11
Thickness mode acoustic impedance
Za , Mrayl
33,6
18.1
36.4
19.6
34.9
18.7
ON PURCHASE (+7 495) 530-00-31 and
535-26-90 fax 534-22-67 or info@elpapiezo.ru or order directly from here.
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.
