Preparation method of 1-3 composite material based on multi-wire cutting technology

Abstract

The invention provides a 1-3 composite material preparation method based on a multi-wire cutting technology, and belongs to the technical field of electronic component manufacturing. The method comprises the technological processes of traditional piezoelectric ceramic substrate preparation, electrode feeding, multi-line cutting, subsequent pouring, machining, electrode printing and the like. According to the single-face and double-face multi-time cutting technology, the characteristics of small stress and approximate normal-temperature cutting of multi-line cutting are fully played, high-precision cutting of polarized piezoelectric ceramics is achieved, the prepared composite material is free of obvious depolarization, the performance of a base material can be fully played, and the adverse effect that polarization is difficult after pouring of a traditional technology is avoided. Compared with the traditional process, the method is suitable for batch production and has obvious technical advantages.

Description

technical field [0001] The invention belongs to the technical field of electronic component manufacturing, and mainly relates to a method for preparing a 1-3 composite material based on a multi-wire cutting technology. Background technique [0002] 1-3 Piezoelectric composite materials overcome the shortcomings of pure piezoelectric ceramics in terms of strength and brittleness, and have light weight, good acoustic impedance matching performance, wide detection frequency band, good emission directionality, low transverse coupling noise, machinability and design It is the most researched and deepest piezoelectric composite material at present. It is widely used in torpedo wake guidance detection, underwater unmanned submersible vehicle sonar detection, anti-frogman sonar, underwater warning sonar , Underwater mine-sweeping detection, underwater landform imaging detection, ultrasonic detection in the medical field, high-frequency phased array and other fields. [0003] The ma...

AI Technical Summary

Problems solved by technology

[0006] In the preparation process of injection molding, it is difficult to carry out subsequent processing after the ceramic unit column (particle) is sintered and shrunk, which makes it difficult to accurately control the size, position, and shape of the ceramic unit column, and the high cost of small-batch test molds restricts the research and development of injection molding to a certain extent.

The method of preparing 1-3 piezoelectric composites by traditional blade (grinding wheel) cutting is high in cost, long in cycle, and poor in repeatability. The stress generated by blade cutting on the ceramic unit column is large (may lead to depolarization), and the unit column is easy to exist during fine cutting. risk of breaking

[0007] In addition, in the traditional preparation method, the polarization is performed after the pouring process. The coercive field of the piezoelectric ceramic is usually greater than 2.5kv / mm, which is greater than the breakdown voltage of the pouring material (filling material), which makes the traditional composite material preparation process difficult. The polarization link in the process has brought great adverse effects. If the polarization voltage is too high, serious breakdown will easily occur, and if the polarization voltage is insufficient, the performance of piezoelectric ceramics cannot be fully exerted.

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