caa a22 4500 445829214 CHVBK 20180317145308.0 cr unu---uuuuu 170323e20111101xx s 000 0 eng 10.1007/s10854-011-0348-3 doi (NATIONALLICENCE)springer-10.1007/s10854-011-0348-3 Alkaline niobate based lead-free ceramic fiber/polymer 1-3 composites: processing and electromechanical properties [Elektronische Daten] [Bing Ma, Ruzhong Zuo, Jingyao Yu, Yan Ran, Yu Wang, Helen Chan] The 1-3 type lead-free piezofiber/epoxy composites were prepared using Li, Ta and Sb modified (Na, K)NbO3 compositions as the ceramic phase by means of fiber arrangement and epoxy cast. The dense and smooth piezoelectric ceramic fibers with a diameter of 250μm or less were fabricated by extruding plastic mud pie through micro-holes drilled in a hard mould by means of a laser-cutter. The dielectric, piezoelectric, electromechanical coupling properties and acoustic impedance characteristic of the as-prepared 1-3 composites with different ceramic volume fractions were characterized and compared with the theoretical values as well as those of monolithic ceramics. A nearly pure thickness vibration mode with a resonance frequency over 2MHz (sample thickness ~1mm) was formed, together with a high electromechanical coupling coefficient (k t ~0.55-0.6), low acoustic impedances (Z~9-14 MRayl) and relatively high piezoelectric voltage coefficient (g 33~30×10−3 m2/C). The results indicate that those composites have potential to be transducer elements in various applications. Springer Science+Business Media, LLC, 2011 Ma Bing Institute of Electro Ceramics and Devices, School of Materials Science and Engineering, Hefei University of Technology, 230009, Hefei, People's Republic of China aut Zuo Ruzhong Institute of Electro Ceramics and Devices, School of Materials Science and Engineering, Hefei University of Technology, 230009, Hefei, People's Republic of China aut Yu Jingyao Institute of Electro Ceramics and Devices, School of Materials Science and Engineering, Hefei University of Technology, 230009, Hefei, People's Republic of China aut Ran Yan Institute of Electro Ceramics and Devices, School of Materials Science and Engineering, Hefei University of Technology, 230009, Hefei, People's Republic of China aut Wang Yu Department of Applied Physics, The Hong Kong Polytechnic University, Kowloon, Hong Kong, People's Republic of China aut Chan Helen Department of Applied Physics, The Hong Kong Polytechnic University, Kowloon, Hong Kong, People's Republic of China aut Journal of Materials Science: Materials in Electronics Springer US; http://www.springer-ny.com 22/11(2011-11-01), 1697-1702 0957-4522 22:11<1697 2011 22 10854 https://doi.org/10.1007/s10854-011-0348-3 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10854-011-0348-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Ma Bing Institute of Electro Ceramics and Devices, School of Materials Science and Engineering, Hefei University of Technology, 230009, Hefei, People's Republic of China aut NATIONALLICENCE 700 1- Zuo Ruzhong Institute of Electro Ceramics and Devices, School of Materials Science and Engineering, Hefei University of Technology, 230009, Hefei, People's Republic of China aut NATIONALLICENCE 700 1- Yu Jingyao Institute of Electro Ceramics and Devices, School of Materials Science and Engineering, Hefei University of Technology, 230009, Hefei, People's Republic of China aut NATIONALLICENCE 700 1- Ran Yan Institute of Electro Ceramics and Devices, School of Materials Science and Engineering, Hefei University of Technology, 230009, Hefei, People's Republic of China aut NATIONALLICENCE 700 1- Wang Yu Department of Applied Physics, The Hong Kong Polytechnic University, Kowloon, Hong Kong, People's Republic of China aut NATIONALLICENCE 700 1- Chan Helen Department of Applied Physics, The Hong Kong Polytechnic University, Kowloon, Hong Kong, People's Republic of China aut NATIONALLICENCE 773 0- Journal of Materials Science: Materials in Electronics Springer US; http://www.springer-ny.com 22/11(2011-11-01), 1697-1702 0957-4522 22:11<1697 2011 22 10854 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer