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Ternary system PSN-PZT piezoelectric ceramic sheet and preparation method thereof

A technology of piezoelectric ceramic sheet and formula, which is applied in the field of piezoelectric ceramic sheet to achieve the effect of simple operation and high yield

Inactive Publication Date: 2018-07-13
GUIZHOU ZHENHUA HONGYUN ELECTRONICS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] But its piezoelectric strain constant d 33 The highest reached only 850 pC / N

Method used

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  • Ternary system PSN-PZT piezoelectric ceramic sheet and preparation method thereof
  • Ternary system PSN-PZT piezoelectric ceramic sheet and preparation method thereof
  • Ternary system PSN-PZT piezoelectric ceramic sheet and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Embodiment 1, preparation formula stoichiometric general formula is Pb 1-x-y m x Z y (Sb 1 / 3 Nb 2 / 3 ) 0.02 (Zr 1 / 2 Ti 1 / 2 ) 0.98 +zwt%Bi 2 o 3 The ternary system PSN-PZT piezoelectric ceramic sheet; where, x=0.1, y=0.08, z=0.3, M, Z are SrCO 3 、BaCO 3 or CaCO 3 At least two of the The preparation steps are as follows:

[0042] 1) Select raw material Pb 3 o 4 , SrCO 3 、BaCO 3 , ZrO 2 、 Bi 2 o 3 、TiO 2 , Sb 2 o 3 , Nb 2 o 5 Mix with deionized water and ball mill for 4 hours to obtain the first slurry; the speed of the ball mill is 480r / min;

[0043] 2) drying the first slurry at 110-130°C, crushing, and passing through a 40-60 mesh sieve to obtain the first sieve;

[0044] 3) Put the first sieve in the furnace, raise the temperature to 950-1150°C (such as 1000°C) at a rate of 2.5°C / min, keep it warm for 2-4 hours (such as 2 hours), and cool to obtain the pre-fired material;

[0045] 4) Mix the pre-calcined material with deionized water and ball ...

Embodiment 2

[0053] Embodiment 2, preparation formula stoichiometric general formula is Pb 1-x-y m x Z y (Sb 1 / 3 Nb 2 / 3 ) 0.02 (Zr 1 / 2 Ti 1 / 2 ) 0.98 +zwt%Bi 2 o 3 The ternary system PSN-PZT piezoelectric ceramic sheet; where, x=0.15, y=0.03, z=0.2, M, Z are SrCO 3 、BaCO 3 or CaCO 3 At least two of the

[0054] Each preparation step is with embodiment 1. Among them, the pre-sintering temperature in step 3) is 1100°C and the holding time is 2h; the debinding temperature in step 7) is 450°C and the debinding time is 2h; the sintering temperature in step 8) is 1250°C and the holding time 3h; the curing temperature of silver burning in step 9) is 820°C; the temperature of silicone oil in step 10) is 25°C, the electric field strength is 2.3kV / mm, and the lower polarization time is 30min.

[0055] Test the dielectric constant and piezoelectric constant of the ternary system PSN-PZT piezoelectric ceramic sheet, the test results are shown in figure 1 ; The test results of other elect...

Embodiment 3

[0056] Embodiment 3, preparation formula stoichiometric general formula is Pb 1-x-y m x Z y (Sb 1 / 3 Nb 2 / 3 ) 0.02 (Zr 1 / 2 Ti 1 / 2 ) 0.98 +zwt%Bi 2 o 3 The ternary system PSN-PZT piezoelectric ceramic sheet; where, x=0.13, y=0.05, z=0.25, M, Z are SrCO 3 、BaCO 3 or CaCO 3 At least two of the

[0057] Each preparation step is with embodiment 1. Among them, the pre-sintering temperature in step 3) is 1130°C; the debinding temperature in step 7) is 450°C, and the debinding time is 2h; the sintering temperature in step 8) is 1250°C, and the holding time is 4h; step 10 ), the temperature of the silicone oil in ) is 25°C, the electric field strength is 2.3kV / mm, and the lower polarization time is 30min.

[0058] Test the dielectric constant and piezoelectric constant of the ternary system PSN-PZT piezoelectric ceramic sheet, the test results are shown in figure 1 ; The test results of other electrical performance parameters are shown in Table 1.

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Abstract

The invention discloses a ternary system PSN-PZT piezoelectric ceramic sheet and a preparation method thereof, and belongs to piezoelectric ceramic sheets and preparation methods thereof. The formulastoichiometric general formula of the ternary system PSN-PZT piezoelectric ceramic sheet is: Pb<1-x-y>M<x>Z<y>(Sb<1 / 3>Nb<2 / 3>)<0.02>(Zr<1 / 2>Ti<1 / 2>)<0.98>+<z>wt%Bi2O3, wherein x=0-0.17, y=0-0.1, z=0-0.4, and M and Z are at least two of SrCO3, BaCO3 or CaCO3. The preparation method comprises the following steps: performing ball-milling on each raw material, then performing drying, pulverizing and sieving, performing pre-burning, then performing ball-milling again, and then performing drying, pulverizing and sieving again; mixing the obtained material with polyvinyl alcohol, performing granulation, and pressing the mixture into a blank; performing rubber discharging at 350-630 DEG C; then firing the rubber discharged blank into a ceramic sheet at 1200-1280 DEG C; and treating the surface ofthe ceramic sheet with silver, then performing silver burning treatment; and performing polarization treatment. The ternary system PSN-PZT piezoelectric ceramic sheet prepared by using the method andthe raw materials provided according to the formula stoichiometric general formula has the advantages of high dielectric constant and piezoelectric constant, large electromechanical coupling coefficient, suitable Curie temperature, etc.; and is suitable for preparing piezoelectric pump drive wafers and piezoelectric actuator wafers.

Description

technical field [0001] The invention relates to a piezoelectric ceramic sheet and a method for preparing the piezoelectric ceramic sheet, in particular to a ternary PSN-PZT piezoelectric ceramic sheet and a preparation method thereof. Background technique [0002] Since the Curie brothers first discovered the piezoelectric effect, after more than 100 years of continuous innovation and development, piezoelectric ceramic materials have been widely used in aerospace, automotive electronics, wireless communications, sensing technology and broadband Internet and other fields, and It occupies an important position in military equipment. PZT piezoelectric ceramic material and BaTiO 3 Compared with piezoelectric ceramics, they have been widely used because of their higher dielectric constant, piezoelectric constant and electromechanical coupling coefficient. With the continuous development of the electronics industry, higher and higher requirements are put forward for the paramete...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/491C04B35/622
CPCC04B35/491C04B35/622C04B2235/3208C04B2235/3213C04B2235/3215C04B2235/3251C04B2235/3294C04B2235/3298
Inventor 戴昭波刘长流张珍宣张玉芬陈键高智红
Owner GUIZHOU ZHENHUA HONGYUN ELECTRONICS
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