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PZT-based piezoelectric ceramic and preparation method thereof

A technology of electric ceramics and base pressure, which is applied in the field of PZT-based piezoelectric ceramics and its preparation, can solve the problems of long heating and cooling time, difficult industrial production, expensive mold cost, etc., so as to reduce the sintering temperature, reduce volatilization, reduce human body and Effects of Environmental Pollution

Pending Publication Date: 2021-04-13
HUNAN HANDLIKE MINIMALLY INVASIVE SURGERY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is difficult for industrialized production due to the high cost of the hot-pressing furnace used and the mold cost used during hot-pressing, long heating and cooling time, low efficiency, and high production costs.

Method used

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  • PZT-based piezoelectric ceramic and preparation method thereof
  • PZT-based piezoelectric ceramic and preparation method thereof
  • PZT-based piezoelectric ceramic and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] A preparation method of lead zirconate titanate (PZT) based piezoelectric ceramics, the process is as follows:

[0048] A. Formulation design: 99%Pb(Zr 0.52 Ti 0.48 )O 3 +1%CaO (wt%), weigh the corresponding raw materials according to the formula according to the stoichiometric ratio;

[0049] B. Primary ball milling: Put the weighed chemical raw materials in a ball milling jar, use zirconia balls as the ball milling body, and ethanol as the ball milling medium, and use a ball mill to perform primary grinding. Among them, the mass ratio of balls, materials and ethanol is 2:1:1, the speed of ball milling is 600r / min, and the ball milling time is 12h;

[0050] C. Drying & sieving: put the ball-milled powder in a drying oven at 80°C for 12 hours, and then pass through an 80-mesh sieve;

[0051] D. Microwave synthesis: put the sieved powder into a corundum crucible, and radiate and synthesize it into a pre-fired powder in a microwave oven. The frequency is 500MHz, the s...

Embodiment 2

[0059] A preparation method of lead zirconate titanate (PZT) based piezoelectric ceramics, the process is as follows:

[0060] A. Formulation design: 99%Pb(Zr 0.52 Ti 0.48 )O 3 +1%BaO (wt%), weigh the corresponding raw materials according to the formula according to the stoichiometric ratio;

[0061] B. Primary ball milling: Place the weighed chemical raw materials in a ball milling jar, use zirconia balls as the ball milling body, and ethanol as the ball milling medium, and use a ball mill to perform primary grinding. Among them, the mass ratio of balls, materials and ethanol is 2:1:1, the speed of ball milling is 600r / min, and the ball milling time is 16h;

[0062] C. Drying & sieving: put the ball-milled powder in a drying oven at 90°C for 8 hours, and then pass it through a 80-mesh sieve;

[0063] D. Microwave synthesis: put the sieved powder into a corundum crucible, and radiate and synthesize it into a pre-fired powder in a microwave oven. The frequency is 500MHz, th...

Embodiment 3

[0071]A preparation method of lead zirconate titanate (PZT) based piezoelectric ceramics, the process is as follows:

[0072] A. Formulation design: 98.5% Pb(Zr 0.52 Ti 0.48 )O 3 +1%SrO+0.5%BaO (wt%), weigh the corresponding raw materials according to the formula according to the stoichiometric ratio;

[0073] B. Primary ball milling: Place the weighed chemical raw materials in a ball milling jar, use zirconia balls as the ball milling body, and ethanol as the ball milling medium, and use a ball mill to perform primary grinding. Among them, the mass ratio of balls, materials, and ethanol is 2:1:1, the speed of ball milling is 600r / min, and the ball milling time is 16h;

[0074] C. Drying & sieving: put the ball-milled powder in a drying oven at 90°C for 8 hours, and then pass it through a 80-mesh sieve;

[0075] D. Microwave synthesis: put the sieved powder into a corundum crucible, and radiate and synthesize it into a pre-fired powder in a microwave oven. The frequency is...

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Abstract

The invention discloses a PZT-based piezoelectric ceramic and a preparation method thereof. In component design, at least one of CaO, BaO, SrO and MgO is doped into PZT ceramic to improve the performance of a ceramic material; and in the preparation method, weighed chemical raw materials are subjected to primary grinding by a ball mill according to a design formula, and then, drying andsieving are carried out; then, the sieved powder is subjected to radiation synthesis in a microwave oven to form presintered powder; and secondary grinding is carried out according to the ball mill method, drying and sieving are carried out, a PVA solution is added for granulating, and then, dry-pressing molding is carried out to obtain a green body; and finally, sintering and densifying are carried out in a microwave oven to obtain the PZT-based piezoelectric ceramic product. Compared with the prior art, on the basis of a traditional powder metallurgy process, and by introducing the microwave radiation synthesis superfine powder and microwave sintering technology, the method has the advantages of being excellent in comprehensive performance, environmentally friendly, high in production efficiency, capable of easily achieving batch production and the like, can well meet commercial requirements and is very suitable for preparing PZT-based piezoelectric ceramic products.

Description

technical field [0001] The invention belongs to the technical field of piezoelectric ceramic preparation, and in particular relates to a PZT-based piezoelectric ceramic and a preparation method thereof. Background technique [0002] Piezoelectric ceramics are named for their piezoelectric effect. When subjected to mechanical stress or a vibration signal is induced, a voltage signal will be output between the two electrode surfaces of the piezoelectric ceramic, which is a positive piezoelectric effect; conversely, when an electrical signal is applied to the piezoelectric ceramic, it can also The electrical signal is converted into a vibration signal, which is the inverse piezoelectric effect. Using these two characteristics (forward and reverse piezoelectric effects) can design many components with special functions. Among them, Pb(Zr x Ti 1-x )O 3 (PZT) piezoelectric ceramics are made of PbZrO 3 and PbTiO 3 The formed continuous solid solution (0≤x≤1) has a perovskite...

Claims

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Application Information

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IPC IPC(8): C04B35/491C04B35/622
CPCC04B35/491C04B35/622C04B2235/3208C04B2235/3296C04B2235/3232C04B2235/3244C04B2235/3215C04B2235/3213C04B2235/3206C04B2235/5436C04B2235/602C04B2235/656C04B2235/6567C04B2235/667C04B2235/786C04B2235/782C04B2235/77
Inventor 李益民王霄
Owner HUNAN HANDLIKE MINIMALLY INVASIVE SURGERY CO LTD
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