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K-12

Ultra High-Temperature Ceramic Provides Piezoelectric Stability in Extreme Environments

Ultra high-temperature piezoelectric ceramic provides piezoelectric stability in extreme environments.Piezo Technologies' new K-12 Ultra High-Temp Piezoelectric Ceramic is the most advanced material available for high-temperature applications. After more than two years of R&D, this new modified bismuth titanate material is set to advance the state of sensors, accelerometers, transducers, and more.

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K-12 PHYSICAL & ELECTRICAL PROPERTIES
Note:  The above values are nominal. 

KT33

Free Dielectric Constant 145

KS33

Clamped Dielectric Constant 140
k33 Longitudinal Coupling Coefficient 0.12
k31 Transverse Coupling Coefficient 0.02
k15 Shear Coupling Coefficient 0.075
kt Thickness Coupling Coefficient 0.12
kp Planar Coupling Coefficient 0.07
d33 Piezoelectric Strain Constant (x 10-12 m/V) ≥12
d31 Piezoelectric Strain Constant (x 10-12 m/V) -5
d15 Piezoelectric Strain Constant (x 10-12 m/V) 10
g33 Piezoelectric Voltage Constant (x 10-3 Vm/N) 9.4
g31 Piezoelectric Voltage Constant (x 10-3 Vm/N) -4.0
g15 Piezoelectric Voltage Constant (x 10-3 Vm/N) 6.7

sE33

Compliance at Constant Field (x 10-12 m2/N) 9.5
Qm Mechanical Q (Thickness) 200
Qm Mechanical Q (Radial) 750

YE33

Young's Modulus at Constant Field (x 1010 N/m2) 10.5
D Dissipation (factored at 1kHz) 0.004
Nt Thickness Frequency Constant (kHz-in)
(Hz-m)
89
2260
Np Planar Frequency Constant (kHz-in)
Planar Frequency Constant (Hz-m)
96
2438
ρ Density (g/cm3) 6.9
ZA Acoustic Impedance (Mega RayL) 28.5
Vs Sound Velocity (m/sec) 4100
TC Curie Temperature (°C) 820
CTE Coefficient of Thermal Expansion (x 10-6 in/in/°F)
(20°C to 100°C)
TBD
dave Average Grain Size (mm) 5 - 10

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