BM600
BM600 - Lead Magnesium Niobate (Electrostrictive)
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Overview
The large electrostrictive effect in the BM600 material appears near the broad maxima of the dielectric permittivity. The characteristics of this material are summarized below.
Features
- Large field-induced strain
- Low hysteresis
- Available in a wide varietyof configurations
Applications
- High-power sonar transducers
- Micro-positioners
- Actuators
- Adaptive systems
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| Density |
7.8 g/cm3 |
| Grain Size |
3 - 6 microns |
| Young’s Modulus (0 Field) |
>100 GPa |
| Modulus Rupture |
>70 MPa |
| Tm |
38°C |
| Maximum K (1 kHz) |
30,000 |
| K @ 25°C (1 kHz) |
22,000 |
| Loss Tangent @ 25°C |
0.01 |
| Static* d33 @ 25°C (4.0 kV/cm) |
1800 pC/N |
| Dynamic d33 @ 38°C (4.5 kV/cm) |
650 pC/N |
| Dynamic d31 @ 38°C (4.0 kV/cm) |
290 pC/N |
| k33 (@ 6 kV/cm) |
0.55 |
| k31 (@ 5 kV/cm) |
0.25 |
| kp (@ 5 kV/cm) |
0.41 |
| kt (@ 6 kV/cm) |
0.47 |
| k33 |
0.53 |
| k31 |
0.25 |
| kp |
0.38 |
| kt |
0.42
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* Notes:
Static charge coefficient and coupling coefficient values are expected to be 10-20% higher than those obtained from dynamic measurements at the same temperature.
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