BM800

BM800 - Lead Zirconate Titanate

Overview
BM800 is a modified lead zirconate titanate composition that offers extremely low loss factor. These features make it suitable for use in high-power transducers such as sonar transducers and ultrasonic welders, as well as in applications involving highly dynamic and repetitive loads.

Features

  • Extremely low loss factor

Applications

  • High power transducers
  • Highly dynamic & repetitive loads
  • Sonar projectors, • Hydrophones
  • Depth sounders, • Communication
  • Level, flow measurement
  • Flaw detection (NDE)
  • Thickness measurement
  • Accelerometers, • Actuators
  • Transducers, • Sterilizers, • Cleaners
  • Degreasers, • Alarms
PROPERTY SYMBOL BM800 UNITS
Electrical1      
Relative Dielectric Constant   KT33 1000 —
Dissipation Factor   Tan d 0.3 %
Piezoelectric
Coupling Factor   kp 0.5 —
  k31 0.3 —
  k33 0.64 —
Charge Constant   d31 -85 10-12 C/N
  d33 225 10-12 C/N
Voltage Constant   g31 -10.5 10-3 Vm/N
  g33 26 10-3 Vm/N
Mechanical Quality Factor   QM 1000 —
Frequency Constants 2   Np 2350 Hz.m
  N1 1700 Hz.m
  N4 2000 Hz.m
Elastic Modulus
Compliance   SE11 11.0 10-12 m2 /N
  SE33 13.5 10-12 m2 /N
Density   r 7.6 g/cm3
Curie Temperature   Tc 325 °C
Ageing Characteristics 3 (% change/time decade)
Coupling Factor   kp -2.5 —
Dielectric Constant   kT33 -6 —
Frequency Constant   Np

1.5

 Hz.m

BM800 - lead zirconate titanate

BM800 - lead zirconate titanate

Notes:
1  Low field parameters;
    measured at 1 KHz

2  NP - Planar
    N1 - Longtitudinal
    N4 - Thickness

3  Reference point of time;
    24 hours after polarization