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PIEZO SYSTEMS, INC. 186 Massachusetts Ave. Cambridge, MA 02139 USA Tel: 617-547-1777 Fax: 617-354-2200 email: sales@piezo.com |
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PIEZO SYSTEMS, INC. 186 Massachusetts Ave. Cambridge, MA 02139 USA Tel: 617-547-1777 Fax: 617-354-2200 email: sales@piezo.com |
| PIEZOELECTRIC | ||||
| Piezo Systems' Designation | PSI-5A4E | PSI-5H4E | ||
| Industry Designations | Navy type II; Industry Type 5A | Navy type VI; Industry Type 5H | ||
| Composition | Lead Zirconate Titanate | Lead Zirconate Titanate | ||
| Relative Dielectric Constant (@ 1 KHz) | KT3 | 1800 | 3800 |
| Piezoelectric "d" coefficients relate the Strain Produced / Electric Field Applied or the Short Circuit Charge Density Produced / Stress Applied |
| d33 | meter/Volt or Coulomb/Newton |
390 x 10-12 | 650 x 10-12 | |
| d31 | meter/Volt or Coulomb/Newton |
-190 x 10-12 | -320 x 10-12 |
| Piezoelectric "g" coefficients relate the Open Circuit Electric Field Produced / Stress Applied or the Strain Produced / Charge Density Applied |
| g33 | Volt-meter/Newton or meter2/Coulomb |
24.0 x 10-3 | 19.0 x 10-3 | |
| g31 | Volt-meter/Newton or meter2/Coulomb |
-11.6 x 10-3 | -9.5 x 10-3 | |
| Coupling Coefficient | k33 | 0.72 | 0.75 | |
| k31 | 0.35 | 0.44 | ||
| Polarizing Field | Ep | Volt/meter | > 2 x 106 | > 1.5 x 106 |
| Initial Depolarizing Field | Ec | Volt/meter | ~ 5 x 105 | ~ 3 x 105 |
| Coercive Field | Ec | Volt/meter | ~ 1.2 x 106 | ~ 8 x 105 |
| MECHANICAL | ||||
| Density | δ | Kg/meter | 7800 | 7800 |
| Mechanical Q | 80 | 32 | ||
| Elastic Modulus | YE3 | Newton/meter2 | 5.2 x 1010 | 5.0 x 1010 |
| YE1 | Newton/meter2 | 6.6 x 1010 | 6.2 x 1010 | |
| THERMAL | ||||
| Thermal Expansion Coefficient | meter/meter °C | ~ 4 x 10-6 | ~ 3 x 10-6 | |
| Curie Temperature | °C | 350 | 230 |