| MATERIAL PROPERTIES |
Free (Clamped) Dielectric Constant |
Longitudinal
Coupling
Coefficient |
Shear
Coupling
Coefficient |
Thickness
Coupling
Coefficient |
Planar
Coupling
Coefficient |
Piezoelectric
Charge Constants
pm/V, or pC/N |
Piezoelectric
Voltage Constants
mV•m/N |
Curie
Temperature,
°C |
Young's
Modulus |
Mechanical
Quality
Factor
(@ 4 MHz) |
Dissipation
Factor
(max.,
@1 kHz), % |
Thickness
Frequency
Constant,
Hz•m (kHz•in) |
Frequency
Constants
Hz•m
(kHz•in) |
Density,
103kg/m3 |
Sound
Velocity
under E=0,
km/sec |
Acoustic
Impedance
under E=0,
Mrayl |
Thermal
Coefficient of
Expansion,
10-6/°C |
| Applications |
Material |
Compare With |
KT3 |
k33 |
k15 |
kt |
kp(k31) |
d33(dh) |
d15 |
d31 |
g33 |
g15 |
g31 |
TC |
Y33E |
Qm,t |
tan |
N t |
Np |
N15 |
|
VL (VS) |
ZL |
|
| High temperature applications - ultrahigh temperature (up to 700°C) accelerometers, pressure, knock, flow and NDT transducers. |
Bismuth Titanate |
K-12 |
|
140
(133) |
0.12 |
0.07 |
0.21 |
0.045
(0.027) |
12
(7) |
10 |
-2.5 |
10 |
7 |
-2 |
820 |
10.5 |
3500 |
0.5 |
2317
(91) |
2868
(113) |
1420
(56) |
7 |
4.62
(2.84) |
32 |
9 |
| K-15 |
|
140
(133) |
0.15 |
0.08 |
0.23 |
0.025
(0.015) |
18
(14) |
14 |
-2 |
15 |
10 |
-1.6 |
600 |
12 |
1800 |
3 |
2010
(79) |
2515
(99) |
1250
(49) |
7.1 |
4.00
(2.50) |
28 |
9 |
Very stable parameters under time, temperature and pressure variations,
low acoustic impedance, low aging, and Q-factor. Used in flaw detectors,
thickness gauges, accelerometers, HF hydrophones; and to measure
acoustic emissions, pressure, knock, flow, level, and well logging
under high pressure and temperature (up to 300°C).
Its low dielectric constant coupled with a high frequency constant
results in a lower capacitance for higher frequency driving and
low acoustic impedance.
Higher signal to noise ratio with low Q and low acoustic impedance. |
Modified Lead MetaNiobate |
K-81 |
|
300
(270) |
0.33 |
0.25 |
0.33 |
0.04
(0.02) |
85
(71) |
95 |
-7 |
32 |
31 |
-2.6 |
460 |
5.5 |
20 |
1 |
1570
(62) |
1970
(78) |
940
(37) |
6.2 |
3.10
(1.87) |
19 |
1.3 |
| K-83 |
|
185
(150) |
0.42 |
0.25 |
0.41 |
0.18
(0.12) |
56
(26) |
54 |
-15 |
34 |
22 |
-9 |
200 |
13 |
700 |
2 |
2690
(105) |
3440
(135) |
1700
(67) |
4.6 |
5.42
(3.35) |
24 |
1.5 |
| K-85 |
|
800
(625) |
0.47 |
0.39 |
0.43 |
0.19
(0.12) |
200
(114) |
210 |
-43 |
25 |
25 |
-6 |
300 |
4.6 |
20 |
2 |
1650
(65) |
2120
(83) |
990
(39) |
5.7 |
3.40
(1.94) |
19 |
1.6 |
Shear and compressional resonance applications at medium to
high frequencies, small diameter transducers, pulse-echo,
NDT and imaging devices.
Low dielectric constant with high shear coupling and high
temperature stability. Large diameter and/or high frequency,
high power radiators, such as sonar, medical therapy and HIFU.
Highly resistant to depoling under severe mechanical stress and electric
drive, low dielectric losses at high electric fields. High power acoustic
transducers, for ultrasonic cleaning, welding and sonar,
high voltage generators, medical therapy and HIFU.
K-300 excels in high power applications, where high sensitivity,
high mechanical quality and low dissipation factors are required.
Extremely high piezoactivity k2Q under strong electrical and mechanical
fields with low dielectric losses. High power applications, HIFU.
Advanced high drive materials for high power transducers,
small HIFU elements, imaging/therapy. |
Modified Lead Zirconate-Titanate (PZT) |
K-180 |
PZT-7A |
425
(225) |
0.68 |
0.68 |
0.53 |
0.52
(0.30) |
165
(45) |
350 |
-60 |
43 |
50 |
-15 |
350 |
7.1 |
700 |
3 |
2060
(81) |
2390
(94) |
1010
(40) |
7.7 |
4.13
(1.96) |
32 |
3.6 |
| K-182 |
PZT-2 |
590
(330) |
0.65 |
0.62 |
0.48 |
0.50
(0.23) |
190
(30) |
330 |
-80 |
37 |
48 |
-16 |
330 |
8.1 |
700 |
0.4 |
2180
(85) |
2490
(98) |
1050
(41) |
7.6 |
4.23
(2.02) |
34 |
3.1 |
| K-270 |
PZT-4, Navy I |
1260
(650) |
0.70 |
0.69 |
0.48 |
0.57
(0.33) |
320
(80) |
490 |
-120 |
29 |
36 |
-10 |
325 |
6.5 |
600 |
0.8 |
2010
(79) |
2250
(87) |
950
(37) |
7.6 |
3.98
(1.85) |
30 |
3.6 |
| K-278 |
PZT-8, Navy III |
1100
(650) |
0.64 |
0.58 |
0.46 |
0.51
(0.30) |
300
(100) |
325 |
-100 |
29 |
30 |
-10 |
300 |
7.4 |
1000 |
0.4 |
2035
(80) |
2320
(92) |
970
(38) |
7.6 |
3.99
(1.88) |
30 |
3.6 |
| K-300 |
PZT-4D |
1500
(740) |
0.71 |
0.70 |
0.49 |
0.56
(0.33) |
320
(40) |
490 |
-140 |
25 |
35 |
-11 |
300 |
5.5 |
900 |
0.4 |
2075
(81) |
2280
(90) |
950
(37) |
7.7 |
4.08
(1.84) |
31 |
6.8 |
| K-320 |
|
1450
(790) |
0.67 |
0.67 |
0.5 |
0.54
(0.32) |
320
(60) |
470 |
-130 |
25 |
33 |
-10 |
275 |
5.5 |
1800 |
0.6 |
2100
(83) |
2290
(90) |
1010
(40) |
7.8 |
4.12
(1.94) |
32 |
6.8 |
| K-340 |
|
3060
(1660) |
0.67 |
0.65 |
0.47 |
0.54
(0.32) |
430
(70) |
630 |
-180 |
16 |
25 |
-7 |
180 |
5.5 |
900 |
0.4 |
2133
(84) |
2300
(91) |
954
(38) |
7.7 |
3.95
(1.87) |
31 |
6.8 |
Widely used for general purposes, hydrophones, accelerometers,
level sensors, acoustic emission, pressure, flow, NDT, medical,
knock, sonar, igniters.
K-500 has high dielectric constant and stable piezoelectric constants,
similar to K-350, good for arrays and composites.
This material has high coupling and dielectric constants.
Good for 1-3 composites, arrays, actuators, sensitive receivers
and line hydrophone applications.
Higher permittivity and piezoelectric constant make it an
excellent choice for 1-3 composites, multi-element arrays,
and actuator applications. |
Modified Lead Zirconate-Titanate (PZT) |
K-350 |
PZT-5A, Navy II |
1750
(795) |
0.72 |
0.67 |
0.5 |
0.61
(0.34) |
390
(40) |
570 |
-175 |
25 |
40 |
-11 |
360 |
5.4 |
140 |
2 |
1960
(77) |
1997
(79) |
950
(37) |
7.7 |
3.92
(1.88) |
30 |
3.6 |
| K-500 |
PZT-5J, Navy V |
3000
(1200) |
0.73 |
0.65 |
0.54 |
0.63
(0.37) |
580
(140) |
700 |
-220 |
21 |
31 |
-9 |
240 |
4.5 |
170 |
2 |
1940
(78) |
2050
(81) |
910
(36) |
7.7 |
3.96
(1.76) |
30 |
9.5 |
| K-600 |
PZT-5H, Navy VI |
3200
(1300) |
0.74 |
0.68 |
0.54 |
0.65
(0.38) |
650
(150) |
730 |
-250 |
23 |
32 |
-9 |
220 |
5 |
160 |
2 |
1990
(78) |
1963
(77) |
920
(36) |
7.7 |
3.98
(1.80) |
31 |
9.5 |
| K-740 |
|
3850
(1750) |
0.71 |
0.69 |
0.54 |
0.63
(0.37) |
740
(160) |
730 |
-290 |
21 |
27 |
-9 |
205 |
5 |
150 |
2 |
2010
(79) |
2020
(79) |
940
(37) |
7.8 |
4.00
(1.84) |
31 |
9 |
High frequency range transducers, for medical imaging, therapy, HIFU, and
NDT - where low losses and high piezoelectric anisotropy are critical. |
PT |
Nova 3B |
|
205
(148) |
0.51 |
0.37 |
0.51 |
0.05
(0.03) |
61
(54) |
78 |
-3.5 |
34 |
35 |
-2 |
350 |
12 |
1700 |
1.5 |
2135
(84) |
2710
(107) |
1360
(54) |
7.6 |
4.19
(2.71) |
32 |
along:
polar.+
planar- |