1,Overview
1)
PZT4 Piezo ceramic have a double behavior of receiving and
transmitting, with higher sensitivity and lower dielectric loss.
2)
PZT5 Piezo ceramic have higher electro-mechanical coupling
coefficient, the moderate dielectric constant and higher sensitivity.
3)
PZT8 Piezo ceramic of high power transmission type have good
piezoelectric property, high mechanical strength, high coercive field, low
dielectric loss in strong fields.
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2, Dimentions
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PZT-4
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PZT-5
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PZT-8
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PZT ceramic
discs
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Diameter
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3-100
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3-100
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3-100
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Thickness
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0.3-10
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0.25-15
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0.4-8
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PZT ceramic
plates
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Outside diameter
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3-100
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3-100
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3-100
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Inside diameter
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≥ 2
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≥ 2
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≥ 2
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Thickness
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0.3-10
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0.25-15
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0.4-8
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PZT ceramic
tubes
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Outside diameter
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3-108
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3-108
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3-105
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Inside diameter
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≥ 2
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≥ 2
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≥2
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Length
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≤50
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≤50
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≤50
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PZT ceramic
plates
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Length
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≤ 50
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≤50
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≤50
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Width
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≥ 1
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≥ 1
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≥ 1
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Thickness
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0.3-10
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0.25-15
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0.3-8
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※ We can also design and process irregularly shaped piezo ceramic.
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3, Parameters
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Symbol
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PZT-4W
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PZT-5L
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PZT-5NL
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PZT-5NM
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PZT-8C
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Electro-mechanical
coupling coefficient
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Kp
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0.60
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0.68
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0.62
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0.65
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0.52
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K31
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0.33
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0.39
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0.36
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0.37
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0.30
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K33
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0.68
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0.73
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0.70
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0.71
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0.60
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K15
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0.66
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0.72
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0.68
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0.70
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0.57
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Kt
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0.50
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0.55
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0.50
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0.53
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0.45
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Relative free dielectric
constants
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εTr3
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1400
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1700
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2100
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3800
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1000
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εTr1
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1550
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1730
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2250
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4100
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1300
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Piezoelectric changing
constant (10-12C/N)
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D31
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160
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195
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200
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270
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110
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D33
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350
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450
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500
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550
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220
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D15
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500
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650
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680
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700
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350
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Elasticity and pliancy
constant (10-12m2/N)
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SE11
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12.6
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17.6
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16.7
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18.2
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11.1
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SE33
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15.8
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19.2
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21.5
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23.6
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14.9
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Mechanical quality
constant
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Qm
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300
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50
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55
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70
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1000
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Frequency constant
(Hz.m)
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Nφ
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2100
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2000
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2000
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2000
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2300
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Nt
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2000
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2000
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2000
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2100
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2100
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Density(G/CM3)
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ρ
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7.6
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7.6
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7.6
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7.6
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7.6
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Dielectric loss
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tgδ
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0.005
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0.02
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0.02
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0.02
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0.003
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Curie temperature(℃)
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Tc
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300
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320
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320
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280
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300
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※ The above data is only for reference, the exact data of piezo
ceramics subject to the actual test.
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