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Polarization method for simultaneous polarization of piezoelectric ceramic single-side two-pole areas

A piezoelectric ceramic and regional technology, applied in the direction of piezoelectric/electrostrictive/magnetostrictive devices, circuits, electrical components, etc., to achieve the effect of improving efficiency and good consistency

Pending Publication Date: 2022-01-28
HAIYING ENTERPRISE GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] For this reason, the technical problem to be solved by the present invention is to overcome the polarization efficiency and success problems of single-sided bipolar piezoelectric ceramics in the prior art, thereby providing a polarization method for simultaneously polarizing the single-sided bipolar regions of piezoelectric ceramics

Method used

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  • Polarization method for simultaneous polarization of piezoelectric ceramic single-side two-pole areas
  • Polarization method for simultaneous polarization of piezoelectric ceramic single-side two-pole areas
  • Polarization method for simultaneous polarization of piezoelectric ceramic single-side two-pole areas

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Embodiment 1

[0022] Embodiment 1 In the specific implementation of the present invention, the following steps are implemented: Step S1: according to the instructions of the polarization circuit diagram, the components are connected in sequence and completed;

[0023] Step S2: Put the piezoelectric ceramic square piece to be polarized into the polarization fixture, the positive and negative regions of the piezoelectric ceramic square piece correspond to the fixture, and then immerse the fixture in the transformer oil to make the piezoelectric ceramic square piece Fully immersed in oil, then heat the transformer oil;

[0024] Step S3: when the oil temperature rises to between 120°C, start heat preservation;

[0025] Step S4 : while keeping the heat preservation, open the withstand voltage tester and start to pressurize the piezoelectric ceramic square piece slowly, the output end is connected to the AC port of the withstand voltage tester, and the applied voltage is 2000V / mm. After the volt...

Embodiment 2

[0035] Embodiment 2 The present invention is realized by the following steps in specific implementation:

[0036] Step S1: according to the instructions of the polarization circuit diagram, the components are connected in sequence;

[0037] Step S2: Put the piezoelectric ceramic square piece to be polarized into the polarization fixture, the positive and negative regions of the piezoelectric ceramic square piece correspond to the fixture, and then immerse the fixture in the transformer oil to make the piezoelectric ceramic square piece Fully immersed in oil, then heat the transformer oil;

[0038] Step S3: when the oil temperature rises to between 140°C, start heat preservation;

[0039] Step S4: While keeping the heat preservation, turn on the withstand voltage tester and start to pressurize the piezoelectric ceramic square piece slowly. The output end is connected to the AC port of the withstand voltage tester, and the applied voltage is 3000V / mm. After the voltage is adde...

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Abstract

The invention relates to a polarization method for simultaneous polarization of piezoelectric ceramic single-side two-pole areas. The method comprises the following steps: connecting all parts in sequence as shown in a graph; putting a piezoelectric ceramic square piece to be polarized into a polarization clamp, then immersing the whole clamp into transformer oil, and then heating the transformer oil; carrying out heat preservation; when heat preservation is carried out, starting a withstand voltage tester to slowly pressurize the piezoelectric ceramic square piece; maintaining the pressure; stopping the heating of the transformer oil, when the transformer oil is cooled to the room temperature, taking out the piezoelectric ceramic square piece in the clamp, and then discharging and cleaning the piezoelectric ceramic square piece. According to the polarization method disclosed by the invention, the positive and negative electrode areas are simultaneously polarized, and corresponding clamps are matched, so that the polarization efficiency can be remarkably improved, and the consistency of the polarization degrees of the positive and negative electrode areas of each piece of ceramic is very good as the electric fields of the positive and negative areas are simultaneously applied; and the offset effect of the polarization degree in the traditional polarization mode does not exist.

Description

technical field [0001] The invention relates to the technical field of electrochemistry of piezoelectric ceramics, in particular to a polarization method for simultaneous polarization of two-pole regions on one side of piezoelectric ceramics. Background technique [0002] The traditional polarization method of single-sided two-pole piezoelectric ceramics is to directly add a DC electric field to the ceramic part, then polarize the positive region first, and then turn the ceramic part over to polarize the negative region. Common piezoelectric ceramics are often one-sided positive. One side has a negative pole, and only needs to apply a DC voltage to the ceramic part when polarizing. [0003] The traditional polarization method is not only inefficient, but also because the domains of the positive and negative regions are arranged in opposite directions, two successive polarizations will offset the polarization effect to a certain extent, affecting the final polarization effect...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L41/257H10N30/045
CPCH10N30/045
Inventor 李文好蒋杏兵
Owner HAIYING ENTERPRISE GROUP