17KHZ Low Frequency Piezoelectric Ultrasonic Transducer
Specifications
Ultrasonic transducer1.excellent corrosion resistance
2.high quality
3.specially formulated
4.long working life
17KHZ low frequency Piezoelectric ultrasonic transducer Specification:
| Properties | Unit | Alumina | Zirconia | ||
| Content | % | ≥95 | ≥99 | ≥99.7 | ≥94 |
| Density | g/cm3 | 3.65 | 3.8 | 3.9 | 6 |
| Hardness (Hv0.5) | GPa | 13.1 | 15 | 17.1 | 13.2 |
| Flexural strength | MPa≥ | 340 | 310 | 370 | 1000 |
| Modulus of elasticity | GPa | 300 | 330 | 350 | 200 |
| Poisson’s ratio | 0.23 | 0.23 | 0.23 | 0.30 | |
| Max use temperature | °C≥ | 1400 | 1750 | 1800 | 1050 |
| Thermal expansion coeff. | ×10-6/°C(40-800°C) | 7.8 | 8 | 8 | 11 |
| Thermal conductivity | W/m·K( 20°C) | 22 | 28 | 31 | 2.6 |
| Thermal shock resistance(in water) | °C | 200 | 200 | 230 | 300 |
| Dielectric Strength | V/m | 15×106 | 15×106 | 15×106 | 11×106 |
| Dielectric loss angle (1MHz) | ×10-4 | 4 | 2 | 1 | 16 |
| Dielectric Constant(1MHz) | 9.2 | 9.8 | 9.9 | 33 | |
| Nitric Acid (60%)90°C | WT Loss mg/cm2/day≤ | 0.12 | 0.1 | 0.05 | ≠0 |
| Caustic Soda(30%)80°C | WT Loss mg/cm2/day≤ | 0.53 | 0.26 | 0.04 | |
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