Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Medical ultrasonic therapeutic instrument transducer piezoelectric ceramic and preparation method thereof
The invention discloses piezoelectric ceramic for a transducer of a medical ultrasonic therapeutic apparatus and a preparation method of the piezoelectric ceramic, and belongs to piezoelectric ceramic and a preparation method thereof. The invention aims to provide the transducer piezoelectric ceramic with high electromechanical coupling coefficient, low dielectric constant and low dielectric loss and the preparation method thereof. The structural general formula of the piezoelectric ceramic is Pb (ZrzTi1-z) x (Zn1/3Ta < 2/3 >) y (Mn1/3Nb2/3) 1-x-yO < 3 + > nwt% A, x is equal to 0.90-0.95, y is equal to 0.01-0.06, z is equal to 0.45-0.55, n is equal to 0.05-2, and the modified element oxide A is one or more oxides of Ce, Al and Li. The method comprises the following steps: mixing Pb3O4, ZrO2, TiO2, ZnO, Nb2O5, Ta2O5, MnO2 and a modified element oxide A, and carrying out wet ball milling, drying and sieving; pre-sintering the primary grinding material; crushing the pre-sintered material, and then carrying out wet ball milling, drying and sieving to obtain porcelain powder; carrying out spray granulation on the porcelain powder, and pressing into a porcelain blank; sintering the ceramic body to obtain a ceramic chip; coating the ceramic chip with silver; and the silver-coated ceramic chip is subjected to polarization treatment. The piezoelectric ceramic disclosed by the invention can completely meet the performance requirements of a transducer of a medical ultrasonic therapeutic apparatus on the piezoelectric ceramic.
本发明公开了一种医用超声治疗仪换能器压电陶瓷及其制备方法，属于压电陶瓷及制备方；旨在提供一种机电耦合系数高、介电常数和介电损耗低的换能器压电陶瓷及其制备方法。本发明压电陶瓷结构通式为：Pb(ZrzTi1‑z)x(Zn1/3Ta2/3)y(Mn1/3Nb2/3)1‑x‑yO3+nwt％A；x＝0.90～0.95，y＝0.01～0.06，z＝0.45～0.55，n＝0.05～2，改性元素氧化物A为Ce、Al、Li中的一种或几种氧化物。本发明方法是：将Pb3O4、ZrO2、TiO2、ZnO、Nb2O5、Ta2O5、MnO2、改性元素氧化物A混合，湿法球磨，烘干，过筛；预烧一次磨料；将该预烧料粉碎后再湿法球磨，烘干，过筛，得瓷粉；该瓷粉喷雾造粒、压制成瓷坯；烧结该瓷坯得瓷片；瓷片被银；该被银陶瓷片极化处理。本发明压电陶瓷完全能够满足医用超声治疗仪换能器对压电陶瓷的性能要求。
Medical ultrasonic therapeutic instrument transducer piezoelectric ceramic and preparation method thereof
The invention discloses piezoelectric ceramic for a transducer of a medical ultrasonic therapeutic apparatus and a preparation method of the piezoelectric ceramic, and belongs to piezoelectric ceramic and a preparation method thereof. The invention aims to provide the transducer piezoelectric ceramic with high electromechanical coupling coefficient, low dielectric constant and low dielectric loss and the preparation method thereof. The structural general formula of the piezoelectric ceramic is Pb (ZrzTi1-z) x (Zn1/3Ta < 2/3 >) y (Mn1/3Nb2/3) 1-x-yO < 3 + > nwt% A, x is equal to 0.90-0.95, y is equal to 0.01-0.06, z is equal to 0.45-0.55, n is equal to 0.05-2, and the modified element oxide A is one or more oxides of Ce, Al and Li. The method comprises the following steps: mixing Pb3O4, ZrO2, TiO2, ZnO, Nb2O5, Ta2O5, MnO2 and a modified element oxide A, and carrying out wet ball milling, drying and sieving; pre-sintering the primary grinding material; crushing the pre-sintered material, and then carrying out wet ball milling, drying and sieving to obtain porcelain powder; carrying out spray granulation on the porcelain powder, and pressing into a porcelain blank; sintering the ceramic body to obtain a ceramic chip; coating the ceramic chip with silver; and the silver-coated ceramic chip is subjected to polarization treatment. The piezoelectric ceramic disclosed by the invention can completely meet the performance requirements of a transducer of a medical ultrasonic therapeutic apparatus on the piezoelectric ceramic.
本发明公开了一种医用超声治疗仪换能器压电陶瓷及其制备方法，属于压电陶瓷及制备方；旨在提供一种机电耦合系数高、介电常数和介电损耗低的换能器压电陶瓷及其制备方法。本发明压电陶瓷结构通式为：Pb(ZrzTi1‑z)x(Zn1/3Ta2/3)y(Mn1/3Nb2/3)1‑x‑yO3+nwt％A；x＝0.90～0.95，y＝0.01～0.06，z＝0.45～0.55，n＝0.05～2，改性元素氧化物A为Ce、Al、Li中的一种或几种氧化物。本发明方法是：将Pb3O4、ZrO2、TiO2、ZnO、Nb2O5、Ta2O5、MnO2、改性元素氧化物A混合，湿法球磨，烘干，过筛；预烧一次磨料；将该预烧料粉碎后再湿法球磨，烘干，过筛，得瓷粉；该瓷粉喷雾造粒、压制成瓷坯；烧结该瓷坯得瓷片；瓷片被银；该被银陶瓷片极化处理。本发明压电陶瓷完全能够满足医用超声治疗仪换能器对压电陶瓷的性能要求。
Medical ultrasonic therapeutic instrument transducer piezoelectric ceramic and preparation method thereof
医用超声治疗仪换能器压电陶瓷及其制备方法
CHU TAO (Autor:in) / ZHANG JING (Autor:in) / HE JING (Autor:in) / WANG LANHUA (Autor:in) / LI JIARUI (Autor:in) / WANG SHIHAI (Autor:in) / HU KEZHENG (Autor:in)
12.01.2024
Patent
Elektronische Ressource
Chinesisch
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