دورية أكاديمية
Cold Sintering of PZT 2-2 Composites for High Frequency Ultrasound Transducer Arrays
| العنوان: | Cold Sintering of PZT 2-2 Composites for High Frequency Ultrasound Transducer Arrays |
|---|---|
| المؤلفون: | Shruti Gupta, Dixiong Wang, Smitha Shetty, Amira Meddeb, Sinan Dursun, Clive A. Randall, Susan Trolier-McKinstry |
| المصدر: | Actuators, Vol 10, Iss 9, p 235 (2021) |
| بيانات النشر: | MDPI AG, 2021. |
| سنة النشر: | 2021 |
| المجموعة: | LCC:Materials of engineering and construction. Mechanics of materials LCC:Production of electric energy or power. Powerplants. Central stations |
| مصطلحات موضوعية: | cold sintering process, piezoelectrics, ultrasound transducers, Materials of engineering and construction. Mechanics of materials, TA401-492, Production of electric energy or power. Powerplants. Central stations, TK1001-1841 |
| الوصف: | Medical ultrasound and other devices that require transducer arrays are difficult to manufacture, particularly for high frequency devices (>30 MHz). To enable focusing and beam steering, it is necessary to reduce the center-to-center element spacing to half of the acoustic wavelength. Conventional methodologies prevent co-sintering ceramic–polymer composites due to the low decomposition temperatures of the polymer. Moreover, for ultrasound transducer arrays exceeding 30 MHz, methods such as dice-and-fill cannot provide the dimensional tolerances required. Other techniques in which the ceramic is formed in the green state often fail to retain the required dimensions without distortion on firing the ceramic. This paper explores the use of the cold sintering process to produce dense lead zirconate titanate (PZT) ceramics for application in high frequency transducer arrays. PZT–polymer 2-2 composites were fabricated by cold sintering tape cast PZT with Pb nitrate as a sintering aid and ZnO as the sacrificial layer. PZT beams of 35 μm width with ~5.4 μm kerfs were produced by this technique. The ZnO sacrificial layer was also found to serve as a liquid phase sintering aid that led to grain growth in adjacent PZT. This composite produced resonance frequencies of >17 MHz. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2076-0825 |
| Relation: | https://www.mdpi.com/2076-0825/10/9/235; https://doaj.org/toc/2076-0825 |
| DOI: | 10.3390/act10090235 |
| URL الوصول: | https://doaj.org/article/8cc925cb1278453e957abadb24af6400 |
| رقم الأكسشن: | edsdoj.8cc925cb1278453e957abadb24af6400 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 20760825 |
|---|---|
| DOI: | 10.3390/act10090235 |