Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Ultrasonic transducer based on high-Curie-temperature piezoelectric material and preparation method of ultrasonic transducer
The invention discloses an ultrasonic transducer based on a high-Curie-temperature piezoelectric material and a preparation method of the ultrasonic transducer, and relates to the technical field of ultrasonic transducers. The ultrasonic transducer is composed of the piezoelectric material 1, a matching material layer 2, a backing material layer 3, a metal shell 4 and a coaxial cable 5, and the working frequency of the ultrasonic transducer is 1 MHz to 100 MHz. The preparation method of the ultrasonic transducer based on high-Curie-temperature piezoelectric ceramic comprises the following steps of A, testing material parameters of piezoelectric ceramic 1 lead magnesium niobate-lead hafnate-titanic acid; and step L, characterizing the acoustic performance of the ultrasonic transducer. The piezoelectric coefficient of the ultrasonic transducer is close to 500 pC/N, the electromechanical coupling coefficient under the thickness telescopic vibration mode is up to 56.9%, and the method plays an important role in improving the bandwidth and sensitivity of the ultrasonic transducer. Depolarization is not prone to occurring when the material is used under the conditions of high energy andhigh temperature, and the material has important application value in the fields of medical imaging, diagnosis treatment, nondestructive testing and the like.
本发明一种基于高居里温度压电材料的超声换能器及其制备方法，涉及超声换能器技术领域。该超声换能器由压电材料1，匹配材料层2，背衬材料层3，金属外壳4以及同轴电缆5组成，其工作频率为1MHz至100MHz。一种基于高居里温度压电陶瓷超声换能器的制备方法，包括步骤：A.测试压电陶瓷1铌镁酸铅‑铪酸铅‑钛酸的材料参数；至步骤L，表征超声换能器的声学性能。超声换能器压电系数接近500pC/N，在厚度伸缩振动模式下的机电耦合系数高达56.9％，对提升超声换能器的带宽和灵敏度具有重要作用。在高能量及较高温度的条件下使用中不会轻易退极化，在医学成像、诊断治疗以及无损检测等领域具有着重要的应用价值。
Ultrasonic transducer based on high-Curie-temperature piezoelectric material and preparation method of ultrasonic transducer
The invention discloses an ultrasonic transducer based on a high-Curie-temperature piezoelectric material and a preparation method of the ultrasonic transducer, and relates to the technical field of ultrasonic transducers. The ultrasonic transducer is composed of the piezoelectric material 1, a matching material layer 2, a backing material layer 3, a metal shell 4 and a coaxial cable 5, and the working frequency of the ultrasonic transducer is 1 MHz to 100 MHz. The preparation method of the ultrasonic transducer based on high-Curie-temperature piezoelectric ceramic comprises the following steps of A, testing material parameters of piezoelectric ceramic 1 lead magnesium niobate-lead hafnate-titanic acid; and step L, characterizing the acoustic performance of the ultrasonic transducer. The piezoelectric coefficient of the ultrasonic transducer is close to 500 pC/N, the electromechanical coupling coefficient under the thickness telescopic vibration mode is up to 56.9%, and the method plays an important role in improving the bandwidth and sensitivity of the ultrasonic transducer. Depolarization is not prone to occurring when the material is used under the conditions of high energy andhigh temperature, and the material has important application value in the fields of medical imaging, diagnosis treatment, nondestructive testing and the like.
本发明一种基于高居里温度压电材料的超声换能器及其制备方法，涉及超声换能器技术领域。该超声换能器由压电材料1，匹配材料层2，背衬材料层3，金属外壳4以及同轴电缆5组成，其工作频率为1MHz至100MHz。一种基于高居里温度压电陶瓷超声换能器的制备方法，包括步骤：A.测试压电陶瓷1铌镁酸铅‑铪酸铅‑钛酸的材料参数；至步骤L，表征超声换能器的声学性能。超声换能器压电系数接近500pC/N，在厚度伸缩振动模式下的机电耦合系数高达56.9％，对提升超声换能器的带宽和灵敏度具有重要作用。在高能量及较高温度的条件下使用中不会轻易退极化，在医学成像、诊断治疗以及无损检测等领域具有着重要的应用价值。
Ultrasonic transducer based on high-Curie-temperature piezoelectric material and preparation method of ultrasonic transducer
一种基于高居里温度压电材料的超声换能器及其制备方法
ZHAO XIANGYONG (Autor:in) / WANG JUSHAN (Autor:in) / FANG BIJUN (Autor:in) / WANG FEIFEI (Autor:in) / ZHANG QIAOZHEN (Autor:in) / XIAO JUNJIE (Autor:in)
23.06.2020
Patent
Elektronische Ressource
Chinesisch
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