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The material performance of piezoelectric ceramic
The material performance of piezoelectric ceramic
The material performance of piezoelectric ceramic | |||||||||||||||
Num | Name of Performance parameter | symbol | index | Allow the public errand | |||||||||||
P-33 | P-43 | P-44 | P-51 | P-52 | P-81 | ||||||||||
1 | Electromechanical coupling coefficient | Kp | 0.60 | 0.58 | 0.60 | 0.65 | 0.64 | 0.53 | ±6.0% | ||||||
K31 | 0.36 | 0.34 | 0.36 | 0.38 | 0.37 | 0.31 | |||||||||
K33 | 0.70 | 0.67 | 0.70 | 0.74 | 0.76 | 0.63 | |||||||||
K15 | 0.70 | 0.67 | 0.70 | 0.72 | 0.75 | 0.66 | |||||||||
Kt | 0.47 | 0.48 | 0.48 | 0.50 | 0.49 | 0.47 | |||||||||
2 | The relative electric capacity rate of freedom |
| 1725 | 1275 | 1350 | 2100 | 3250 | 1025 | ±12.5% | ||||||
| 1725 | 1700 | 1900 | 2400 | 3500 | 1400 | |||||||||
3 | The medium losses | tgδ | 0.020 | 0.006 | 0.005 | 0.020 | 0.020 | 0.004 | ≤ | ||||||
4 | The gentle and agreeable constant of elasticity (x10-12m2/N) |
| 15 | 11.5 | 13 | 15 | 15.5 | 11.0 | ±10% | ||||||
| 9.0 | 8.0 | 8.5 | 9.0 | 9.0 | 8.5 | |||||||||
| 25 | 21.0 | 21.5 | 22.0 | 23.0 | 21.0 | |||||||||
5 | Piezoelectricity meet an emergency the constant (x10-12m/v或C/N) | d31 | 160 | -130 | -150 | -210 | -260 | -100 | ±12.5% | ||||||
d33 | 390 | 290 | 320 | 450 | 575 | 225 | |||||||||
d15 | 480 | 500 | 530 | 710 | 950 | 450 | |||||||||
6 | Mechanical cue | Qm | 75 | 500 | 400 | 70 | 65 | 800 | ≥ | ||||||
7 | Frequency constant (Hz•m) | Nd | 1950 | 2200 | 2200 | 2000 | 1940 | 2300 | ±5% | ||||||
N1 | 1470 | 1700 | 1600 | 1450 | 1450 | 1700 | |||||||||
N3 | 1880 | 2050 | 2000 | 1900 | 1900 | 1960 | |||||||||
N5 | 1130 | 1230 | 1230 | 1200 | 1200 | 1230 | |||||||||
Nt | 2250 | 2300 | 2300 | 2250 | 2300 | 2280 | |||||||||
8 | The velocity of sound (m/s) | Vd | 3000 | 3500 | 3300 | 3000 | 3010 | 3500 | ±5% | ||||||
V1 | 2940 | 3400 | 3200 | 2900 | 2900 | 3400 | |||||||||
V3 | 3760 | 4100 | 4000 | 3800 | 3800 | 3920 | |||||||||
V5 | 2260 | 2460 | 2460 | 2400 | 2400 | 2460 | |||||||||
Vt | 4500 | 4600 | 4600 | 4500 | 4600 | 4560 | |||||||||
9 | Density (x103kg/m3) | ρ | 7.6 | 7.45 | 7.5 | 7.45 | 7.4 | 7.45 | ≥ | ||||||
10 | Curie´s temperature (℃) | Tc | 335 | 300 | 300 | 260 | 180 | 300 | ≥ | ||||||
11 | Rate of change of time of ten times (%) | ANd | 0.20 | 1.3 | 1.2 | 0.35 | 0.35 | 1.3 | |||||||
AKp | -0.25 | -2.0 | -1.8 | -0.4 | -0.25 | -2.0 | |||||||||
Aε | -1.5 | -4.5 | -4.0 | -1.5 | -2.0 | -4.0 | |||||||||
12 | The relative rate of change of temperature (%)-10℃~50℃ The datum 25℃ | ΔNd/N | 1.0 | 1.5 | 1.0 | 1.5 | 2.0 | 1.5 | |||||||
Δε/ε | 15 | 9.5 | 9.0 | 20 | 40 | 9.0 | |||||||||
13 | The strong field lies between electric performance T=25℃ E=400V | tgδ | 0.04 | 0.04 | 0.01 | ≤ | |||||||||
Δε/ε | 0.20 | 0.17 | 0.06 | ≤ | |||||||||||
note: 1， Index besides Curie´s temperature, is the measurement value for ten days after polarizing for the performance parameter index in the form . | |||||||||||||||