Preparation method of lead zirconate titanate piezoelectric ceramics

A technology of lead zirconate titanate and piezoelectric ceramics, which is applied in the field of preparation of lead zirconate titanate piezoelectric ceramics, to achieve the effects of easy industrial production, improved powder sintering activity, and low cost
CN102718484AInactive Publication Date: 2012-10-10MORNSUN GUANGZHOU SCI & TECH +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
MORNSUN GUANGZHOU SCI & TECH
Publication Date
2012-10-10
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a preparation method of lead zirconate titanate piezoelectric ceramics, which comprises the following steps of: (1) taking tetra-n-butyl titanate and zirconium oxychloride as main raw materials to prepare and obtain aqueous solution in which a zirconium titanium hydroxide coprecipitate is suspended, taking prepared lead nitrate solution and a mineralizing agent, uniformly mixing and carrying out magnetic stirring; (2) carrying out hydro-thermal treatment on the agitated mixed solution, cooling to a room temperature after reaction, taking a reactant, cleaning and drying to obtain solid powder; and (3) grinding the solid powder, adding an adhesive to prepare a ceramic blank sheet, sintering the ceramic blank sheet and carrying out silver electrode polarization on the sintered ceramic blank sheet to prepare the lead zirconate titanate ceramics with high voltage electrical property. The preparation method has the beneficial effects that the process is simple, the lead zirconate titanate piezoelectric ceramics have uniform powder grain size, good dispersibility and high sintering activity, and the comprehensive piezoelectric and dielectric property of the lead zirconate titanate piezoelectric ceramics is remarkably superior to that of PZT ceramics sintered by a traditional solid-phase sintering method.
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Description

technical field

[0001] The invention relates to a preparation method of piezoelectric ceramics, in particular to a preparation method of lead zirconate titanate piezoelectric ceramics. Background technique

[0002] Lead zirconate titanate (PZT) material is a widely used piezoelectric functional material, which has many advantages such as good piezoelectric, dielectric, ferroelectric properties, easy doping modification, and good stability. Near the same-phase boundary point, PZT ceramics have high piezoelectric constants and electromechanical coupling coefficients, and are the basic materials for the preparation of ultrasonic transducers, piezoelectric transformers, filters and piezoelectric buzzers. industry plays an important role.

[0003] The preparation of lead zirconate titanate powder with high purity, uniform particle size, good crystallinity and proper stoichiometric ratio is the most important prerequisite for obtaining high-quality piezoelectric devices. At pres...

Claims

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