3D Printing of BaTiO3 Piezoelectric Ceramics for a Focused Ultrasonic Array

被引：73
作者：
Cheng, Jian [1 ]
Chen, Yan [1 ]
Wu, Jun-Wei [1 ]
Ji, Xuan-Rong [1 ]
Wu, Shang-Hua [1 ]
机构：
[1] Guangdong Univ Technol, Sch Electromech Engn, Guangzhou 510006, Guangdong, Peoples R China
来源：
SENSORS | 2019年 / 19卷 / 19期
基金：
美国国家科学基金会;
关键词：
stereolithography; BTO; piezoelectric ceramic; ultrasonic transducer; STEREOLITHOGRAPHY; SUSPENSIONS;
D O I：
10.3390/s19194078
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
BaTiO3 (BTO) ceramics were fabricated based on stereolithography technology. The microstructures and electric properties of the BTO ceramics were studied. X-ray patterns of sintered BTO ceramics indicated that the tetragonal phase had formed, and the grain size increased clearly as BTO weight percentage increased. Moreover, the BTO ceramics exhibited good electric properties, with a piezoelectric constant d(33) of 166 pC/N at 80% BTO weight percentage. To evaluate the properties of 3D printed BTO ceramics, a 1.4 MHz focused ultrasonic array was fabricated and characterized. The -6dB bandwidth of the array was 40%, and the insertion loss at the center frequency was 50 dB. The results show that the printed BTO ceramics array have good potential to be used in ultrasonic transducers for various applications.
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页数：8
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