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Matching layer of ultrasonic transducer and manufacturing method of matching layer

A technology for ultrasonic transducers and manufacturing methods, which can be used in the direction of sound-generating devices, instruments, and fluids using vibrations, etc. It can solve problems such as inability to ensure uniformity of materials, increase in surface roughness, and decrease in matching effects, and achieve a breakthrough in design limitations. Effect

Active Publication Date: 2018-08-07
XIDIAN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the thickness is close to the particle diameter, the surface roughness increases greatly, and the mixing preparation process cannot guarantee the uniformity of the material, and the matching effect is greatly reduced

Method used

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  • Matching layer of ultrasonic transducer and manufacturing method of matching layer
  • Matching layer of ultrasonic transducer and manufacturing method of matching layer
  • Matching layer of ultrasonic transducer and manufacturing method of matching layer

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Embodiment Construction

[0024] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0025] The present invention will be further described in detail below in conjunction with examples and specific implementations.

[0026] A matching layer of an ultrasonic transducer, characterized in that it comprises a low-density sound velocity layer and a high-density sound velocity layer arranged in sequence, the low-density sound velocity layer is composed of material A, the high-density sound velocity layer is composed of material B, and the ...

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Abstract

The invention relates to a matching layer of an ultrasonic transducer. The matching layer comprises a low-density sound velocity layer and a high-density sound velocity arranged in sequence, wherein the low-density sound velocity layer is made of a material A, the high-density sound velocity layer is made of a material B, the low-density sound velocity layer is connected with a surface electrode of a piezoelectric material, and the high-density sound velocity layer is used for exposing to air or is connected with other devices. According to the technical scheme, the matching layer is made of asubstance capable of being obtained from the nature directly or indirectly, thickness of the matching layer can be controlled accurately by means of physical deposition, and the bottle neck in grinding of the thickness in the prior art is broken; as the thickness is controlled accurately, a matching system with an accurate acoustic impedance value can be obtained. Besides, the matching layer canbe applied to transducers having different special shapes, and the limit in conventional design can be broken through.

Description

Technical field [0001] The present invention relates to the field of ultrasonic transducers, in particular to a matching layer of an ultrasonic transducer and a manufacturing method thereof. Background technique [0002] As a functional device for acoustic-electric conversion, ultrasonic transducers have a wide range of applications. Due to the large acoustic impedance difference between the external medium and the piezoelectric element of the transducer, the sound energy is reflected back and forth inside the transducer and cannot be effectively transmitted to the outside. In the traditional manufacturing process, the λ / 4 matching layer design principle is often used to design and prepare the acoustic impedance matching layer, which relieves the gradient of acoustic impedance drop, thereby improving the acoustic transmission efficiency. The traditional process mixes metal or oxide particles with higher acoustic impedance and epoxy resin with lower acoustic impedance to prepare ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B06B1/06B06B3/00G10K9/122G10K11/02
CPCB06B1/06B06B3/00G10K9/122G10K11/02
Inventor 费春龙刘治勇杨新宇李迪杨银堂
Owner XIDIAN UNIV
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