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PZT material

PZT material

  • Categories:Material
  • Time of issue:2021-04-08 11:09:34
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Lead Zirconate Titanate (PZT)`s attributes of producing an electrical charge when mechanically compressed or vibrating when an electrical charge is applied, make it very conducive for passive sensing, active transmitting and mechanical displacement applications.

We utilize two predominant types of piezoelectric materials, each providing a set of unique properties suitable for a range of applications. Two types of piezoelectric ceramics include High Power "Hard PZT" and high Sensitivity "Soft PZT".

High powder "Hard" Piezoelectric Materials are ceramics able to withstand high levels of electrical and mechanical stress and are particularly suited to high voltage and power applications.

High sensitivity "Soft" Piezoelectric Materials are particularly useful for sensing applications due to its high sensitivity and permittivity. As such these piezoelectric ceramics are frequently used in low power applications as transducers, receivers and generators.

PZT is a machinable ceramic and can be precision dimensioned into tubes, rings, discs, plates, and hemispheres. The PZT material is also versatile from a forming aspect as it can be net shaped by pressing, extruding and casting into these same shapes as well as complex components including, co-fired bimorphs and multilayer actuators. Sizes range from microns to centimeters. Electrode choices are extensive including fired silver, electroless nickel, sputtered or vacuum deposited Nickel-Chrome, Gold, Tin, Aluminium and Vanadium.

Hard PZT

High power or "hard PZT" ceramics can withstand high levels of electrical excitation and mechanical stress. These materials are suited for high voltage or high power generators and transducers.

PZT-4 Series

This material range is ideally suited for ultrasonic cleaning, sonar, and other high power acoustic radiation applications. These materials are designated as PZT-4 series type materials and are capable of producing large mechanical drive amplitudes while maintaining low mechanical and dielectric losses. In addition, it can be used under both constant and repetitive conditions. Within this group of materials, Yuhai offer a complete range of three PZT-4 series material types with a variety of permitivity values, coupling, power handling and actuation properties.

PZT-8 Series

This material range is used in high power applications, even though its piezoelectric activity level is slightly lower than PZT-4 series types. With an extremely high mechanical quality factor and extremely low loss factor, PZT-8 series materials have the ultimate power handling capability. Within this group of materials, Yuhai offer a complete range of three PZT-8 series material types with a variety of permittivity values, coupling, power handling and actuation properties.

The typical value of "Hard PZT" ceramic performance

"Hard" PZT materials

 

 

 

 

 

 

 

 

Properties

 

 

PZT-41

PZT-42

PZT-43

PZT-82

PCrN-4

PBaS-4

Dielectric Constant

ɛTr3

 

1050

1250

1420

1100

1600

1900

 

 

 

 

 

 

 

 

 

Coupling factor

KP

 

0.58

0.58

0.58

0.52

0.6

0.59

 

K31

 

0.32

0.33

0.34

0.3

0.35

0.34

 

K33

 

0.66

0.67

0.68

0.57

0.68

0.68

 

Kt

 

0.48

0.48

0.48

0.4

0.45

0.49

Piezoelectric coefficient

d31

10-12m/v

-106

-124

-138

-100

-156

-160

 

d33

10-12m/v

260

280

300

240

350

380

 

g31

10-3vm/n

-11.4

-11.2

-11

-10.3

-11

-9.5

 

g33

10-3vm/n

28

25.3

24

25

24.7

22.6

Frequency coefficients

Np

 

2280

2200

2160

2280

2100

2200

 

N1

 

1671

1613

1583

1671

1539

1613

 

N3

 

1950

1900

1875

1950

1850

1850

 

Nt

 

2250

2200

2200

2300

2200

2200

Elastic compliance coefficient

Se11

10-12m2/n

11.8

12.7

13.2

11.6

14

13.2

Machanical quality factor

Qm

 

1000

800

600

1200

400

2200

 

 

 

 

 

 

 

 

 

Dielectric loss factor

Tg δ

%

0.3

0.4

0.5

0.3

0.6

0.5

Density

ρ

g/cm3

7.5

7.5

7.5

7.6

7.5

7.5

Curie Temperature

Tc

°C

320

320

320

310

310

310

Young's modulus

YE11

<109N/m2

85

79

76

86

71

76

Poison Ratio

 

 

0.3

0.3

0.3

0.3

0.3

0.33

 

Soft PZT

High sensitivity or "soft" ceramics feature high sensitivity and permittivity, but under high drive conditions are susceptible to self heating beyond their operating temperature range . These materials are used in various pick-ups and sensors, low-power motor-type transducers, receivers, and low power generators.

PZT-5 Series

The PZT-5 series materials are all [soft". They range in Curie temperatures from 165°C to 350°C. All these materials have been optimized for charge constants or coupling coefficients for specific applications. PZT-5 series is often used as the receiver or generator element in hydrophones, accelerometers, and vibration sensors. PZT-5 Series is a lead zirconate titanate with a high sensitivity, permittivity, and time stability. PZT5H series is used in sensitive receivers and applications requiring fine movement control. It has been used in a wide range of applications from hydrophones to ink jet printers. PZT5H Series provides extremely high permittivity, coupling, and piezoelectric constant.

The typical value of "Soft PZT" ceramic performance

"Soft" PZT materials

 

 

 

 

 

 

 

 

 

Properties

 

 

PSnN-5

PLiS-51

PZT-51

PZT-52

PZT-53

PZT-5H

PZT-5X

Dielectric Constant

ɛTr3

 

1600

2000

2200

2400

2600

3200

4500

 

 

 

 

 

 

 

 

 

 

Coupling factor

KP

 

0.6

0.62

0.62

0.63

0.64

0.68

0.7

 

K31

 

0.35

0.35

0.35

0.35

0.36

0.38

0.4

 

K33

 

0.68

0.7

0.68

0.7

0.7

0.76

0.77

 

Kt

 

0.5

0.52

0.5

0.5

0.5

0.52

0.53

Piezoelectric coefficient

d31

10-12m/v

-170

-197

-186

-204

-227

-275

-300

 

d33

10-12m/v

400

450

500

520

550

620

750

 

g31

10-3vm/n

-12

-11.1

-9.6

-9.8

-9.9

-9.7

-7.5

 

g33

10-3vm/n

28

25.4

25.6

24.5

23.9

22

18.8

Frequency coefficients

Np

 

2000

1920

1980

1980

1960

1900

1960

 

N1

 

1466

1407

1451

1451

1437

1393

1437

 

N3

 

1825

1925

1900

1900

1755

1550

1800

 

Nt

 

2100

2100

2150

2150

2150

2100

2200

Elastic compliance coefficient

Se11

10-12m2/n

16.6

18

16.7

17

17.4

18

19

Machanical quality factor

Qm

 

85

80

80

75

75

70

65

 

 

 

 

 

 

 

 

 

 

Dielectric loss factor

Tg δ

%

2

2

2

2

2

2

2

Density

ρ

g/cm3

7.5

7.5

7.6

7.6

7.6

7.5

7.5

Curie Temperature

Tc

°C

350

345

270

270

270

230

165

Young's modulus

YE11

<109N/m2

60

56

60

59

57.5

56

53

Poison Ratio

 

 

0.36

0.36

0.36

0.36

0.36

0.36

0.39

These typical values are provided for design information only. Standard tolerances are approximatedly ±20% of these values. Material properties are measured according to standard IEEE and DOD definitioins and measuring techniques. All data shown represent nominal characteristics (20C) 24 hours after polarization. 

YUHAI Piezo material

PZT-43

PZT-51

PZT-5H

PZT-53

PZT-82

NAVY 

Navy Type I 

Navy Type II 

Navy Type VI 

Navy Type V

Navy Type III 

Morgan Matroc

PZT-4

PZT-5A

PZT-5H

PZT-5J

PZT-8

Channel Ind.

C5400

C5500

C5700

 

C5800

EDO Corp.

EC-64

EC-65

EC-76

EC-70

EC-69

Keramos

K-270

K-350

K-600

K-500

K-278

APC

840

850

856

855

880

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