The dynamic characteristics of ultrasonic therapeutic transducers using lead-free na0.5k0.5nbo3 based ceramics

Ming Ru Yang, Sheng Yuan Chu, Cheng Che Tsai, Cheng Shong Hong, Chih Lung Lin

研究成果: Conference contribution

摘要

In this paper, lead-free Na0.5K0.5NbO3 (NKN) based piezoelectric ceramics are synthesized by the conventional mixed-oxide methods with sintering temperature at 900-1050 °C. Microstructural analyses of un-doped and CuO-doped ceramics have been carried out and compared using X-ray diffraction (XRD) and scanning electron microscope (SEM), The dependence of the sintering temperatures of the CuO-doped NKN ceramics on the piezoelectric and dielectric properties have been investigated. The results show that the CuO-doped NKN specimens sintered at 1020 °C present the high thickness coupling factor, kt (>0.50), mechanical quality factor Qm =1100 and the lower temperature coefficient of resonance frequency in thickness mode (dfr/fr <2%) within the temperature range 20-100 °C Then, we successfully construct 3-MHz transducers (LF transducer) utilizing our fabricated piezoceramics and examine their static resonant characteristics. Simultaneously, their dynamic acoustic power is measured by the acoustic force balance under a power circuit driving with the intermittent pulse control as compared to the commercial transducers. We find the effective coupling factor of LF transducer (0.05) is superior to that of commercial transducer (0.45).

原文English
主出版物標題Ceramics for Environmental and Energy Applications - A Collection of Papers Presented at the 8th Pacific Rim Conference on Ceramic and Glass Technology, PACRIM-8
頁面105-116
頁數12
出版狀態Published - 2010 八月 19
事件8th Pacific Rim Conference on Ceramic and Glass Technology, PACRIM-8 - Vancouver, BC, Canada
持續時間: 2009 五月 312009 六月 5

出版系列

名字Ceramic Transactions
217
ISSN(列印)1042-1122

Other

Other8th Pacific Rim Conference on Ceramic and Glass Technology, PACRIM-8
國家Canada
城市Vancouver, BC
期間09-05-3109-06-05

指紋

Transducers
Lead
Ultrasonics
Sintering
Acoustics
Temperature
Piezoelectric ceramics
Dielectric properties
Oxides
Electron microscopes
Scanning
X ray diffraction
Networks (circuits)

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Materials Chemistry

引用此文

Yang, M. R., Chu, S. Y., Tsai, C. C., Hong, C. S., & Lin, C. L. (2010). The dynamic characteristics of ultrasonic therapeutic transducers using lead-free na0.5k0.5nbo3 based ceramics. 於 Ceramics for Environmental and Energy Applications - A Collection of Papers Presented at the 8th Pacific Rim Conference on Ceramic and Glass Technology, PACRIM-8 (頁 105-116). (Ceramic Transactions; 卷 217).
Yang, Ming Ru ; Chu, Sheng Yuan ; Tsai, Cheng Che ; Hong, Cheng Shong ; Lin, Chih Lung. / The dynamic characteristics of ultrasonic therapeutic transducers using lead-free na0.5k0.5nbo3 based ceramics. Ceramics for Environmental and Energy Applications - A Collection of Papers Presented at the 8th Pacific Rim Conference on Ceramic and Glass Technology, PACRIM-8. 2010. 頁 105-116 (Ceramic Transactions).
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title = "The dynamic characteristics of ultrasonic therapeutic transducers using lead-free na0.5k0.5nbo3 based ceramics",
abstract = "In this paper, lead-free Na0.5K0.5NbO3 (NKN) based piezoelectric ceramics are synthesized by the conventional mixed-oxide methods with sintering temperature at 900-1050 °C. Microstructural analyses of un-doped and CuO-doped ceramics have been carried out and compared using X-ray diffraction (XRD) and scanning electron microscope (SEM), The dependence of the sintering temperatures of the CuO-doped NKN ceramics on the piezoelectric and dielectric properties have been investigated. The results show that the CuO-doped NKN specimens sintered at 1020 °C present the high thickness coupling factor, kt (>0.50), mechanical quality factor Qm =1100 and the lower temperature coefficient of resonance frequency in thickness mode (dfr/fr <2{\%}) within the temperature range 20-100 °C Then, we successfully construct 3-MHz transducers (LF transducer) utilizing our fabricated piezoceramics and examine their static resonant characteristics. Simultaneously, their dynamic acoustic power is measured by the acoustic force balance under a power circuit driving with the intermittent pulse control as compared to the commercial transducers. We find the effective coupling factor of LF transducer (0.05) is superior to that of commercial transducer (0.45).",
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Yang, MR, Chu, SY, Tsai, CC, Hong, CS & Lin, CL 2010, The dynamic characteristics of ultrasonic therapeutic transducers using lead-free na0.5k0.5nbo3 based ceramics. 於 Ceramics for Environmental and Energy Applications - A Collection of Papers Presented at the 8th Pacific Rim Conference on Ceramic and Glass Technology, PACRIM-8. Ceramic Transactions, 卷 217, 頁 105-116, 8th Pacific Rim Conference on Ceramic and Glass Technology, PACRIM-8, Vancouver, BC, Canada, 09-05-31.

The dynamic characteristics of ultrasonic therapeutic transducers using lead-free na0.5k0.5nbo3 based ceramics. / Yang, Ming Ru; Chu, Sheng Yuan; Tsai, Cheng Che; Hong, Cheng Shong; Lin, Chih Lung.

Ceramics for Environmental and Energy Applications - A Collection of Papers Presented at the 8th Pacific Rim Conference on Ceramic and Glass Technology, PACRIM-8. 2010. p. 105-116 (Ceramic Transactions; 卷 217).

研究成果: Conference contribution

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AU - Yang, Ming Ru

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AU - Lin, Chih Lung

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N2 - In this paper, lead-free Na0.5K0.5NbO3 (NKN) based piezoelectric ceramics are synthesized by the conventional mixed-oxide methods with sintering temperature at 900-1050 °C. Microstructural analyses of un-doped and CuO-doped ceramics have been carried out and compared using X-ray diffraction (XRD) and scanning electron microscope (SEM), The dependence of the sintering temperatures of the CuO-doped NKN ceramics on the piezoelectric and dielectric properties have been investigated. The results show that the CuO-doped NKN specimens sintered at 1020 °C present the high thickness coupling factor, kt (>0.50), mechanical quality factor Qm =1100 and the lower temperature coefficient of resonance frequency in thickness mode (dfr/fr <2%) within the temperature range 20-100 °C Then, we successfully construct 3-MHz transducers (LF transducer) utilizing our fabricated piezoceramics and examine their static resonant characteristics. Simultaneously, their dynamic acoustic power is measured by the acoustic force balance under a power circuit driving with the intermittent pulse control as compared to the commercial transducers. We find the effective coupling factor of LF transducer (0.05) is superior to that of commercial transducer (0.45).

AB - In this paper, lead-free Na0.5K0.5NbO3 (NKN) based piezoelectric ceramics are synthesized by the conventional mixed-oxide methods with sintering temperature at 900-1050 °C. Microstructural analyses of un-doped and CuO-doped ceramics have been carried out and compared using X-ray diffraction (XRD) and scanning electron microscope (SEM), The dependence of the sintering temperatures of the CuO-doped NKN ceramics on the piezoelectric and dielectric properties have been investigated. The results show that the CuO-doped NKN specimens sintered at 1020 °C present the high thickness coupling factor, kt (>0.50), mechanical quality factor Qm =1100 and the lower temperature coefficient of resonance frequency in thickness mode (dfr/fr <2%) within the temperature range 20-100 °C Then, we successfully construct 3-MHz transducers (LF transducer) utilizing our fabricated piezoceramics and examine their static resonant characteristics. Simultaneously, their dynamic acoustic power is measured by the acoustic force balance under a power circuit driving with the intermittent pulse control as compared to the commercial transducers. We find the effective coupling factor of LF transducer (0.05) is superior to that of commercial transducer (0.45).

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Yang MR, Chu SY, Tsai CC, Hong CS, Lin CL. The dynamic characteristics of ultrasonic therapeutic transducers using lead-free na0.5k0.5nbo3 based ceramics. 於 Ceramics for Environmental and Energy Applications - A Collection of Papers Presented at the 8th Pacific Rim Conference on Ceramic and Glass Technology, PACRIM-8. 2010. p. 105-116. (Ceramic Transactions).